4th Grade Geometry Review

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 an acute angle?

Back

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

Front

What is a right angle?

Back

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

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

What is a line?

Back

A line is a straight path that extends infinitely in both directions.

Front

What is a ray?

Back

A ray is a part of a line that has one endpoint and extends infinitely in one direction.

Front

What is symmetry?

Back

Symmetry is when one shape becomes exactly like another if you flip, slide, or turn it.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

What is a polygon?

Back

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

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.