Geometry Vocabulary

Front

Two lines that are the same distance apart that never meet are called __________.

Back

parallel lines

Front

An angle less than 90 degrees is a(n) __________.

Back

acute angle

Front

A 4-sided figure with straight sides where opposite sides are parallel is called a __________.

Back

parallelogram

Front

The amount of space inside a 3-D figure. It is measured in cubic units.

Back

volume

Front

What kind of triangle has no equal sides?

Back

scalene triangle

Front

A triangle with one angle measuring 90 degrees is called a __________.

Back

right triangle

Front

A polygon with three sides is called a __________.

Back

triangle

Front

The distance around a figure is known as __________.

Back

perimeter

Front

A line that intersects another line at a right angle is called __________.

Back

perpendicular lines

Front

A shape that has all sides and angles equal is called __________.

Back

regular polygon