Being able to compare angles can help us in this lesson. Let's try this problem to review.
Which of these angles is larger?
Choose the option with a larger turn between the lines.
The answer is option B.
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?
Look for the angle with a small square in the corner.
Option A has a small square at the corner, so the answer is option A.
A right angle is exactly 90\degree. It can also be called a quarter turn.