9.05 Name and classify angles

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

Examples

Example 1

Which of these angles is larger?

A

B

Worked Solution

Create a strategy

Choose the option with a larger turn between the lines.

Apply the idea

The answer is option B.

Watch question walkthrough

This video looks at right angles as quarter turns measuring 90\degree. We also look at angles that are bigger or smaller than 90\degree.

Examples

Example 2

Which of the following is a right angle?

A

B

Worked Solution

Create a strategy

Look for the angle with a small square in the corner.

Apply the idea

Option A has a small square at the corner, so the answer is option A.

Watch question walkthrough