Right angles

Front

What is a right angle?

Back

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

Front

How can you identify a right angle in a shape?

Back

A right angle can be identified by looking for a square corner or using a protractor to measure the angle.

Front

What is the relationship between right angles and rectangles?

Back

All angles in a rectangle are right angles.

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

Can a triangle have more than one right angle?

Back

No, a triangle can have only one right angle.

Front

What is the sum of angles in a triangle?

Back

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

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is the difference between a right angle and a straight angle?

Back

A right angle measures 90 degrees, while a straight angle measures 180 degrees.

Front

What is a complementary angle?

Back

Complementary angles are two angles whose measures add up to 90 degrees.