Geometry Chapter 5

Front

Triangle Sum Theorem

Back

The sum of the measures of the interior angles of a triangle = 180 degrees.

Front

Corollary to the Triangle Sum Theorem

Back

The acute angles of a right triangle are complementary (=90 degrees).

Front

How to prove triangles are congruent?

Back

1) Definition of Congruence 2) SSS 3) SAS 4) HL.

Front

What type of triangle has 1 obtuse angle?

Back

Obtuse triangle.

Front

If all 3 sides are congruent, what is the triangle's classification?

Back

SSS Congruence Postulate (Side, Side, Side).

Front

Definition of Congruent Triangles

Back

Triangles that have the same size and shape; corresponding sides and angles are equal.

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side; if three sides of one triangle are equal to three sides of another triangle, the triangles are congruent.

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side; if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.

Front

What does ASA stand for in triangle congruence?

Back

Angle-Side-Angle; if two angles and the included side of one triangle are equal to two angles and the included side of another triangle, the triangles are congruent.

Front

What does AAS stand for in triangle congruence?

Back

Angle-Angle-Side; if two angles and a non-included side of one triangle are equal to two angles and the corresponding non-included side of another triangle, the triangles are congruent.