Supplementary angle

Supplementary Angles: The Dynamic Duo!

Imagine two angles that are like best friends who always add up to 180 degrees. We call these "Supplementary Angles"!

What Are Supplementary Angles?

• Two angles that, when put together, make a straight line

• They always add up to exactly 180 degrees

• Like two magical puzzle pieces that create a perfect straight path

Fun Way to Understand

Think of supplementary angles like:

• Two superhero friends who team up to make a complete line

• Two pizza slices that together make a full pizza

• Special angle friends who complete each other's line

Examples

• 90° and 90° are supplementary angles (90 + 90 = 180)

• 45° and 135° are supplementary angles (45 + 135 = 180)

• 60° and 120° are supplementary angles (60 + 120 = 180)

Playful Activities

1. Draw two angles that add up to 180 degrees

2. Use your arms to create supplementary angles

3. Find supplementary angles around your classroom

   • Straight lines

   • Book edges

   • Classroom walls meeting

4. Visualization

   90°

       /\

      / \

     /____\ 90°

      180°