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Equilateral triangles are also equiangular triangles and the measure of each interior angle is 60 degrees.

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Equilateral triangles are also equiangular triangles and the measure of each interior angle is 60 degrees.

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Side angle side is a way to prove that two triangles are congruent.

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Obtuse angle is more then 180

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Triangles that have 3 congruent sides are called
equilateral triangles

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Angles that are less that 90 degrees are acute and angles that are over 90 but less than 180 are obtuse

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Triangles can be classified according to the lengths of their sides: An equilateral triangle has all sides the same length. An equilateral triangle is also a regular polygon with all angles measuring 60°. An isosceles triangle has two sides of equal length.

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Isosceles triangle has two congruent angles.

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An acute triangle has one acute angle

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An isosceles triangle has 2 congruent sides

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2 right triangles that each have hypotenuse legs are congruent.

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a right triangle is identified by a right angle

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exterior angle theorem- the measure of an exterior angle is equal to the sum of the 2 remote interior angles.

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Exterior Angle Theorem: The measure of an exterior angle is equal to the sum of the 2 remote interior angles

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All angles of an equilateral triangle are 60 degrees each

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SSS is a way to prove that 2 triangles are congruent

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when two triangles have congruent pairs of angles and sides, they are corresponding parts.

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If three sides are congruent and each angle measures 60 degrees, then it is an equilateral triangle.

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An equilateral triangle have all sides the same length

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Each angle of an equilateral triangle is 60 degrees

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All triangles have three angles and three sides.

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equilateral triangle is also an equiangular triangle and the measure of each interior angle is 60 degrees

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SAS theorem states that two triangles are equal if two sides and the angle between those two sides are equal

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2 way to classify a triangle is:
1)by side length
2)by measure of the angle

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An equilateral triangle is also an equiangular triangle, with the measurement of each interior angle to be 60 degrees.

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congruent triangle : SSS_AAS_ASA_SAS_hypotenuse
total degree of one triangle is 180
statement by side and angle :

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The exterior angle theorem is the sum of the two remote interior angles  of a triangle to get the sum of the exterior angle

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In this chapter I learnt that for triangles to be congruent they must be same shape and same size meaning even if the triangles are equiangular it also must have the same side lengths.

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Isosceles Triangle have 2 sides that are congruent.

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All triangles, according to Triangle Sum Theorem, add up to 180 degrees

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A scalene triangle has all its sides of different lengths

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Triangles have 3 sides and 3 angles.

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isosceles triangle have 2 base angles congruent .

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The triangle sum theorem states that all interior angles of a triangle add up to 180.

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Scalene Triangles have three unequal sides.

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ASS, SSA, or AAA triangle postulates made triangles not congruent.

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An equilateral triangle has all of it's three sides the same, and all of their interior angles are 60 degrees.

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All Interior angles in a triangle add up to 180 ,according to the triangle sum theorem

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2 ways to classify a triangle is:
1)by side length
2)by measure of the angles

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There is two ways to classify a triangle 1)by side lengths 2)by measures of the angle

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Triangles have 3 vertices and 3 edges.

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All three angles in a triangle adds up to 180 degrees.

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Write a true statement about Triangles that we have learned in this chapter. Do not duplicate other's post.