Ray, Line, Line Segments and Angles

Front

What is a ray?

Back

A ray is a part of a line that starts at a 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 line?

Back

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

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint.

Front

What is a right angle?

Back

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

Front

How many right angles are in a square?

Back

A square has 4 right angles.

Front

What does perpendicular mean?

Back

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

Front

How many line segments make a rectangle?

Back

A rectangle is made up of 4 line segments.

Front

What is the sum of angles in a triangle?

Back

The sum of angles in a triangle is always 180 degrees.

Front

What is an acute angle?

Back

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