Geometry Unit Vocab by Natalia Steves https://padlet.com/stevesn24/jxx4qdgrkdws7z6a en-us 2020-10-01 13:03:53 UTC 2020-10-29 13:08:35 UTC hello@padlet.com https://padlet.net/icons/png/1f5d2.png Point stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794423072 A precise location or place on a plane. Usually represented by a dot.]]> 2020-10-01 13:05:30 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794423072 Distance (length) stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794435342 Distance is a numerical measurement of how far apart objects or points are.]]> 2020-10-01 13:08:21 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794435342 Axiom stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794451943 Axiom is a rule or a statement that is accepted as true without proof. An axiom is also called a postulate.]]> 2020-10-01 13:12:15 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794451943 Postulate stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794467556 Postulate is a true statement, which does not require to be proved. Is used to derive the other logical statements to solve a problem.]]> 2020-10-01 13:15:54 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794467556 Collinear stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794493658 Three or more points that fall on a straight line.]]> 2020-10-01 13:21:53 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794493658 Ray stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794503556 A part of a line with a start point but no end point (it goes to infinity).]]> 2020-10-01 13:24:09 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794503556 Line Segment stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794508125 The part of a line that connects two points.]]> 2020-10-01 13:25:12 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794508125 Perpendicular stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794515339 Lines that are at right angles (90°) to each other.]]> 2020-10-01 13:26:51 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794515339 Center stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794523469 A center is a point that is the same distance from all the extremities of a figure.]]> 2020-10-01 13:28:41 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794523469 Equilateral Triangle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794530685 A triangle with all three sides of equal length.]]> 2020-10-01 13:30:03 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794530685 Congruent stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794537516 The same shape and size, but we are allowed to flip, slide or turn.]]> 2020-10-01 13:31:33 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794537516 Midpoint stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794543983 A point on a line segment that divides it into two equal parts. The halfway point of a line segment]]> 2020-10-01 13:32:59 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794543983 Plane stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794555755 A flat surface that is infinitely large and with zero thickness]]> 2020-10-01 13:35:34 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794555755 Line stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794562317 A line of points that extends infinitely in two directions.]]> 2020-10-01 13:37:02 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/794562317 Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806275151 The figure formed by two rays meeting at a common end point.]]> 2020-10-06 11:43:28 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806275151 Angle Measure stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806282235 The measure of the angle formed by the two rays or arms at a common vertex. Angles are measured in degrees with a protractor.]]> 2020-10-06 11:47:37 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806282235 Vertex stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806286591 Each angular point of a polygon, polyhedron, or other figure.]]> 2020-10-06 11:50:10 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806286591 Initial Side of an Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806288705 One side of the angle is always fixed along the positive x-axis. This is called the initial side of the angle.]]> 2020-10-06 11:51:19 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806288705 Terminal Side of an Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806291823 The other ray of an angle, that is not fixed along the positive x-axis, which is called the terminal side of an angle.]]> 2020-10-06 11:53:00 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806291823 Vertical Angles stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806296363 Vertical Angles are the angles opposite each other when two lines cross. "Vertical" in this case means they share the same Vertex (corner point), not the usual meaning of up-down.]]> 2020-10-06 11:55:26 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806296363 Radius stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806303440 A straight line extending from the center of a circle or sphere to the circumference or surface: The radius of a circle is half the diameter.]]> 2020-10-06 11:58:56 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806303440 Subset stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806305638 A set A is a subset of another set B if all elements of the set A are elements of the set B. In other words, the set A is contained inside the set B. ... Since B contains elements not in A, we can say that A is a proper subset of B]]> 2020-10-06 12:00:01 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806305638 SSS Congruence Theorem stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806310762 SSS (Side-Side-Side): If three pairs of sides of two triangles are equal in length, then the triangles are congruent. ASA (Angle-Side-Angle): If two pairs of angles of two triangles are equal in measurement, and the included sides are equal in length, then the triangles are congruent.]]> 2020-10-06 12:02:30 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806310762 Segment Bisector stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806314938 Any geometric figure that can pass through (or sit on) the line segment can form a segment bisector. A segment bisector is a geometric figure that divides the line segment exactly in half.]]> 2020-10-06 12:04:34 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806314938 Parallel stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806325850 Parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel.]]> 2020-10-06 12:09:25 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806325850 Obtuse Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806329898 An obtuse angle has a measurement greater than 90 degrees but less than 180 degrees.]]> 2020-10-06 12:11:15 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806329898 Right Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806332237 An angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines.]]> 2020-10-06 12:12:15 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806332237 Acute Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806333932 Acute angles measure less than 90 degrees.]]> 2020-10-06 12:13:00 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806333932 Straight Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806336996 An angle of 180°.]]> 2020-10-06 12:14:16 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806336996 Acute stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806342507 Small, shortage, having a lesser amount of something; sharp, quick.]]> 2020-10-06 12:16:28 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806342507 Reflex Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806354914 Reflex angles are angles measuring greater than 180 degrees and less than 360 degrees.]]> 2020-10-06 12:21:07 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806354914 Supplementary Angles stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806362597 Two Angles are Supplementary when they add up to 180 degrees. They don't have to be next to each other, just so long as the total is 180 degrees.]]> 2020-10-06 12:23:53 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806362597 Complementary Angles stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806365553 Two angles are called complementary when their measures add to 90 degrees.]]> 2020-10-06 12:24:53 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806365553 Circle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806369854 A circle is all points in the same plane that lie at an equal distance from a center point. The circle is only composed of the points on the border. ... A circle is the same as 360°.]]> 2020-10-06 12:26:25 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806369854 Center of a Circle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806571401 The center of a circle is the point equidistant from the points on the edge.]]> 2020-10-06 13:22:16 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806571401 Arc stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806578518 A portion of the circumference of a circle.]]> 2020-10-06 13:23:58 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806578518 Triangle Inequality Theorem stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806585764 The sum of the lengths of any two sides of a triangle is greater than the length of the third side.]]> 2020-10-06 13:25:44 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806585764 Angle Bisector stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806593496 The line or line segment that divides the angle into two equal parts. The angle bisectors meet at the in center.]]> 2020-10-06 13:27:35 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/806593496 Transformation stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848650969 Transformation means to change. Hence, a geometric transformation would mean to make some changes in any given geometric shape.]]> 2020-10-21 13:44:33 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848650969 Translation stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848656179 "Sliding": moving a shape without rotating or flipping it. The shape still looks exactly the same, just in a different place.]]> 2020-10-21 13:45:40 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848656179 Perpendicular Bisector stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848664084 A perpendicular bisector of a line segment is a line segment perpendicular to and passing through the midpoint of (left figure). The perpendicular bisector of a line segment can be constructed using a compass by drawing circles centered at and with radius and connecting their two intersections.]]> 2020-10-21 13:47:26 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848664084 Corresponding Angles stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848667924 When two lines are crossed by another line (which is called the Transversal), the angles in matching corners are called corresponding angles.]]> 2020-10-21 13:48:15 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848667924 Vertex Angle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848674569 The point about which an angle is measured is called the angle's vertex, and the angle  associated with a given vertex is called the vertex angle.]]> 2020-10-21 13:49:43 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848674569 Congruence Statement stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848681061 To be congruent means to be the same size and shape. Two triangles are congruent if their corresponding angles and sides are congruent.]]> 2020-10-21 13:51:10 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848681061 Geometric Proof stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848691665 A geometric proof involves writing reasoned, logical explanations that use definitions, axioms, postulates, and previously proved theorems to arrive at a conclusion about a geometric statement.]]> 2020-10-21 13:53:29 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848691665 Regular Polygon stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848713730 A polygon is regular when all angles are equal and all sides are equal (otherwise it is "irregular").]]> 2020-10-21 13:58:13 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/848713730 Reflection stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853804251 Every point is the same distance from the central line. The reflection has the same size  and shape as the original image]]> 2020-10-22 18:33:55 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853804251 Dilation stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853812047 A dilation is a transformation that produces an image that is the same shape as the original, but is a different size.]]> 2020-10-22 18:35:45 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853812047 Transversal stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853819346 A line that cuts across two or more (usually parallel) lines.]]> 2020-10-22 18:37:32 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853819346 Isosceles Triangle stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853827188 A triangle with two equal sides. The angles opposite the equal sides are also equal.]]> 2020-10-22 18:39:29 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853827188 Parallelogram stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853840681 A flat shape with 4 straight sides where opposite sides are parallel.]]> 2020-10-22 18:42:44 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853840681 Coincide stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853845727 Two lines or shapes that lie exactly on top of each other.]]> 2020-10-22 18:44:01 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853845727 Triangle Congrunce stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853859370 Two triangles are congruent if their corresponding sides are equal in length, and their corresponding angles are equal in measure.]]> 2020-10-22 18:47:29 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853859370 Rhombus stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853869596 A flat shape with 4 straight sides that are all equal length. Also opposite sides are parallel and opposite angles are equal. It is a type of parallelogram.]]> 2020-10-22 18:50:07 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853869596 Rotation stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853875359 The distance from the center to any point on the shape stays the same.
Every point makes a circle around the center:
]]> 2020-10-22 18:51:41 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853875359 Rigid Motion stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853888094 any transformation, as a translation or rotation, of a set such that the distance between points is preserved.]]> 2020-10-22 18:55:08 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853888094 Alternate Interior Angles stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853911040 When two lines are crossed by another line (called the Transversal): Alternate Interior Angles are a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal.]]> 2020-10-22 19:01:29 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853911040 Base Angles stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853922502 either of the angles of a triangle that have one side in common with the base.]]> 2020-10-22 19:04:43 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/853922502 Congruence stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854023900 The same shape and size, but we are allowed to flip, slide or turn. In this example the shapes are congruent (you only need to flip one over and move it a little). Angles are congruent when they are the same size (in degrees or radians). Sides are congruent when they are the same length.]]> 2020-10-22 19:34:19 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854023900 Properties of Rigid Motions stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854056551 All rigid motions map lines to lines, segments to segments, and rays to rays. All rigid motions preserve distance and angle measurements. Rotation of a line 180 degrees about a point not on a line produces a parallel line. Rotation of a line 180 degrees about a point on a line produces the same line. Translation of a line not along the line produces a parallel line. When a point is reflected across a line, the segment connecting the point and its image is perpendicularly bisected by the line.]]> 2020-10-22 19:44:27 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854056551 Symmetries stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854109570 When two or more parts are identical after a flip, slide or turn. The simplest type of Symmetry is "Reflection" (or "Mirror") Symmetry.]]> 2020-10-22 20:02:45 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854109570 Kite stevesn24 https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854113972 A quadrilateral with two pairs of equal, adjacent (touching) sides.]]> 2020-10-22 20:04:25 UTC https://padlet.com/stevesn24/jxx4qdgrkdws7z6a/wish/854113972