Classifying Polygons

Front

What is a polygon?

Back

A polygon is a closed figure made up of straight line segments. It has at least three sides.

Front

How many sides does a triangle have?

Back

3

Front

What is the name of a 4-sided polygon?

Back

Quadrilateral

Front

What is a regular polygon?

Back

A regular polygon is a polygon with all sides and angles equal.

Front

What is an irregular polygon?

Back

An irregular polygon is a polygon that does not have all sides and angles equal.

Front

How many sides does a pentagon have?

Back

5

Front

What is the name of a 10-sided polygon?

Back

Decagon

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.