To measure angles correctly, you can use a protractor.

A protractor is a tool shaped like a half-circle, and it shows numbers from 0° to 180°.

Here’s how to use it:

1. Position the Protractor: First, place the small hole in the middle of the protractor right over the point where the two lines meet. This point is called the vertex of the angle.

2. Align the Base: Next, make sure one side of the angle lines up with the 0° line on the protractor.

3. Read the Measurement: Now, look at where the other side of the angle crosses the numbers on the protractor. Here’s what the numbers mean:

   • If you get a number less than 90°, that’s called an acute angle.
   • If the number is exactly 90°, that’s a right angle.
   • If the number is between 90° and 180°, then it’s an obtuse angle.

By practicing these steps, you’ll get better at measuring angles!