Lines and Angles

Front

What type of line does this picture show?

Back

Intersecting lines are lines that cross each other.

Front

Two angles added together to produce 90 degrees are called?

Back

Complementary angles.

Front

What is the meaning of perpendicular?

Back

Two angles that intersect and form a right angle.

Front

Find the missing angle if one angle is 35 degrees.

Back

The missing angle is 55 degrees.

Front

Which one is a right angle?

Back

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

Front

What are parallel lines?

Back

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

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 do you call angles that are opposite each other when two lines intersect?

Back

Vertical angles.

Front

What is a line segment?

Back

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