Basic Geometry Vocabulary

Front

A polygon with 8 sides

Back

Octagon

Front

Two adjacent angles whose noncommon sides are opposite rays.

Back

Linear Pair

Front

Two angles whose measures add up to 90 degrees are called...

Back

Complementary Angles

Front

A polygon with 7 sides

Back

Heptagon

Front

A polygon with 6 sides

Back

Hexagon

Front

A polygon with 5 sides

Back

Pentagon

Front

A polygon with 10 sides

Back

Decagon

Front

Two angles whose measures add up to 180 degrees are called...

Back

Supplementary Angles

Front

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

Back

Vertical Angles

Front

A pair of angles that share a common vertex and a common side but do not overlap are called...

Back

Adjacent Angles