Geometry Review

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides.

Front

What are the types of angles?

Back

The types of angles are acute (less than 90°), right (exactly 90°), obtuse (more than 90° but less than 180°), and straight (exactly 180°).

Front

What is a polygon?

Back

A polygon is a closed figure made up of straight line segments.

Front

What is an octagon?

Back

An octagon is a polygon with eight sides.

Front

What is a nonagon?

Back

A nonagon is a polygon with nine sides.

Front

What does it mean for lines to be parallel?

Back

Parallel lines are lines that never meet and are always the same distance apart.

Front

What does it mean for lines to be intersecting?

Back

Intersecting lines are lines that cross each other at one point.

Front

What does it mean for lines to be perpendicular?

Back

Perpendicular lines are lines that intersect at a right angle (90°).

Front

How many sides does a triangle have?

Back

A triangle has three sides.

Front

How many sides does a pentagon have?

Back

A pentagon has five sides.