Ch. 7 Geometry Vocab

Front

The sum of the measures of __________ is 90 degrees.

Back

complementary angles

Front

Measures between 91° and 180°:

Back

Obtuse angle

Front

A figure with three sides and angles is a __________.

Back

Triangle

Front

The __________ gives the ratio that compares the measurements of the drawing or model to the real object.

Back

Scale

Front

3D figure with polygon faces is a(n) __________.

Back

Polyhedron

Front

Sides with the same length are __________.

Back

congruent

Front

A scale written as a ratio without units in simplest form is called the __________.

Back

Scale factor

Front

A flat surface that extends infinitely in all directions.

Back

Plane

Front

A(n) __________ has three congruent sides and three 60° angles.

Back

equilateral triangle

Front

Angles with the same vertex, a common side, and no overlap are __________.

Back

Adjacent angles