Geometry Vocab

Front

Two figures with the same size and shape are ___________.

Back

congruent

Front

An angle whose measure is greater than 90 degrees is a(n) ________ angle.

Back

obtuse

Front

Points that lie on the same line are ___________.

Back

collinear

Front

The Triangle Sum Theorem states that the sum of the ______ angles of a triangle is _____.

Back

interior ; 180 degrees

Front

An arc whose measure is equal to 180 degrees is a __________.

Back

semicircle

Front

What is the definition of a polygon?

Back

A polygon is a closed figure formed by a finite number of line segments that do not cross each other.

Front

What is the difference between a regular and irregular polygon?

Back

A regular polygon has all sides and angles equal, while an irregular polygon does not.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.