Measure Angles with a Protractor

Discover how to measure angles like a pro with our fun guide!

What is an Angle?

Angles are everywhere!
An angle is formed when two lines meet at a point. We measure angles in degrees (°) using a special tool called a protractor. The size of an angle tells us how much one line is turned away from the other.

90°

How to Use a Protractor

1️⃣ Place the center of the protractor on the angle's vertex (corner point)

2️⃣ Align one line with the protractor's baseline (the 0° line)

3️⃣ Read the measurement where the other line crosses the protractor's scale

Protractor example

Let's Practice!

Example 1: Measuring a Right Angle

Right angles measure exactly 90°. Try measuring this angle:

90°

Example 2: Real-World Angles

Look around you! Can you find angles in these objects?

Pizza slice
Book corner
Kite

Try measuring these angles with your protractor! What do you notice about the angles in different shapes?

Parent Tips 🌟

  • Make it hands-on: Use real protractors to measure angles around your home - doors, tables, and even the hands of a clock!
  • Angle hunt game: Create a scavenger hunt for different types of angles (acute, right, obtuse) in your neighborhood.
  • Connect to sports: Show how angles matter in sports - the angle of a basketball shot or a soccer kick affects where the ball goes!

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