What Are Sides and Angles?
Every shape is made up of sides and angles!
Sides are the straight lines that form the edges of a shape. Angles are the corners where two sides meet.
Counting them helps us understand and describe different shapes all around us!
How to Count Sides and Angles
1️⃣ Find a corner - where two lines meet
2️⃣ Count each side - touch each straight edge
3️⃣ Count each angle - every corner is an angle!
Let's Practice Together!
Example 1: Counting Sides
How many sides does each shape have? Click to count!
Triangle
Square
Pentagon
Example 2: Understanding Angles
Angles are everywhere! Move the slider to see how angles change:
45°
Move the slider to change the angle!
Try to count the angles in these shapes:
- A triangle has ___ angles
- A rectangle has ___ angles
- A star has ___ angles
Parent Tips 🌟
- Shape Hunt: Go on a shape hunt around your home and count sides/angles of objects you find
- Playdough Shapes: Create shapes with playdough and count the sides and angles together
- Side-Angle Connection: Help your child notice that the number of sides always equals the number of angles in simple shapes