Geometry Vocabulary

Front

Coplanar lines intersect at right angles are called ______ lines.

Back

Perpendicular

Front

Non-coplanar lines that never intersect are called ______ lines.

Back

Skew

Front

Are points D and E collinear or coplanar?

Back

Collinear

Front

Angles that share the same measurement are called _____

Back

Congruent angles

Front

Acute angles are angles that are ____

Back

Less than 90°

Front

Lines that are always the same distance apart and never meet are called ______ lines.

Back

Parallel

Front

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

Back

Transversal

Front

Angles that are opposite each other when two lines intersect are called ______ angles.

Back

Vertical angles

Front

A triangle with one angle measuring more than 90° is called a ______ triangle.

Back

Obtuse triangle

Front

The sum of the interior angles of a triangle is always equal to _____ degrees.

Back

180 degrees