Geo ACP: Midyear Terms and Definitions

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What additional information about an isosceles triangle will also make it an equilateral triangle?

Back

The base angles each measure 60°.

Front

What is the transitive property in mathematics?

Back

If a = b and b = c, then a = c.

Front

What does the Side-Angle-Side (SAS) postulate state?

Back

If two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, then the triangles are congruent.

Front

What does the Angle-Angle-Side (AAS) postulate state?

Back

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, then the triangles are congruent.

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines it intersects; they are congruent.

Front

What is the definition of congruent triangles?

Back

Triangles that are identical in shape and size, meaning their corresponding sides and angles are equal.

Front

What is the sum of the angles in a triangle?

Back

180°.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90°.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180°.