Geometry Vocabulary

Front

Coplanar lines intersect at right angles are called ______ lines.

Back

Perpendicular

Front

Angles are defined by their measurement. Right angles are angles that are ____

Back

equal to 90°

Front

Points, Lines and Planes are the _________ of Geometry.

Back

Undefined terms

Front

Angles that are formed by intersecting lines are called _____

Back

vertical angles

Front

The shortest distance between two points is ____

Back

a straight line

Front

Lines that never intersect and are always the same distance apart are called ____ lines.

Back

Parallel

Front

A line that intersects two or more lines at different points is called a ____ line.

Back

Transversal

Front

Two angles that add up to 90° are called ____ angles.

Back

Complementary

Front

Two angles that add up to 180° are called ____ angles.

Back

Supplementary

Front

A triangle with one angle measuring more than 90° is called an ____ triangle.

Back

Obtuse