Measuring Angles

Front

What is a line?

Back

A line is a straight one-dimensional figure that extends infinitely in both directions.

Front

What is a ray?

Back

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

Front

What is a line segment?

Back

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

Front

What is a point?

Back

A point is a precise location or position in a two-dimensional space, represented by a dot.

Front

What is the measure of a straight angle?

Back

A straight angle measures 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 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 reflex angle?

Back

A reflex angle is an angle that measures more than 180 degrees but less than 360 degrees.

Front

What are parallel lines?

Back

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