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What's a right angle?

What's an obtuse angle?

What's an acute angle?

1. has a 90 degree angle

2. has greater than a 90 degree angle

3. has less than 90 degree angle

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If I have points (-3,5) and (8,-1) you would use the mid point formula stated clearly on the left...

after you plug in the numbers and do the math you should get (3,1)

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To figure out a problem like this, you must set both sides equal to eachother

3x+4=5x-6

+6 +6

3x+10= 5x

-3x -3x

10=2x

x=5

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Find the length of the line segment whose endpoints
are (-3, 4) and (5,4).

(X2-X1)2 + (Y2-Y1)2

8+ 0 = 64( square root)

length = 8

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If these numbers are the side lengths.. find the last side using the pythagorean THM.

15(15) + B(b) = 17(17)

225 + b = 289

b= 8

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Adds up to 90

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adds up to 180

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special lines intersecting that form right angles

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Measurement of angles

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Statement that is true

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Any line, segment or plane that is being intersected at a mid point

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equal

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A2 + B2 = C2

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distance between 2 end points

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in between numbers or thing

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If M is the midpoint of line AB, then line AM is congruent to line MB

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P = 2L+2W

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area equals length times width

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if points lie on the same line, they are coplanar

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1. On a number line, the coordinate of the midpoint of a segment whose endpoints have coordinates a and b is a+b over 2.

1. In a coordinate plane, the coordinates of the midpoint of a segment whose endpoints have coordinates (x1,y1) and (x2, y2) are

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The midpoint M of line PQ is the point between P and Q such that PM=MQ

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The distance d between any two points with coordinates (x1, y1) and (x2, y2) is given by the formula:

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In a right triangle, the sum of the squares of the measures of the legs equal the square of the measure of the hypotenuse.

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Postulate 1-2 Segment Addition Postulate

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Postulate 1-2 Segment Addition Postulate

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If Q is between P and R, then PQ+QR=PR, then Q is between P and R

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points that don't lie on a line

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The points on any line can be paired with real numbers so that, given any two points P and Q corresponds to a positive number.

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points that lie on a line

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a pair with an x coordinate and y coordinate

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4 divided spaces on a grid

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The formula for the perimeter of a rectangle is p=2L+2w, where P represents the perimeter , L represents the length of the rectangle, and W represents the width of the rectangle

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numbers intersection at zero points

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vertical line

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horizontal line

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The formula for the area of a rectangle is A=lw, where A represents the area expressed in square units, L represents length, and w represents the width.

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grid system used in plotting points

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1. Explore the problem

2. Plan the solution

3. Solve the problem

4. Examine the solution