Lesson

Being able to compare angles can help us in this lesson. Let's try this problem to review.

Which of these angles is larger?

A

B

Worked Solution

Idea summary

Angles can be compared by how large the turn is between the lines.

This video looks at right angles as quarter turns measuring 90\degree.

Which of the following is a right angle?

A

B

Worked Solution

Idea summary

A right angle is exactly 90\degree. It can also be called a quarter turn.