Count sides and vertices

key notes:

🔷 What is a Shape?

• A shape is a form or outline of an object.
• Examples: triangle, square, rectangle, circle

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🔶 What are Sides?

• Sides are the straight lines that make up a shape.
• Count how many straight lines a shape has.

👉 Examples:

• Triangle → 3 sides
• Square → 4 sides
• Rectangle → 4 sides

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🔷 What are Vertices?

• Vertices (corners) are the points where two sides meet.
• Each corner is called a vertex.

👉 Examples:

• Triangle → 3 vertices
• Square → 4 vertices
• Rectangle → 4 vertices

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🔶 Important Note

A circle has:

• 0 sides
• 0 vertices (no corners)

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🔷 Easy Trick to Remember 🎯

• Sides = lines
• Vertices = corners

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🔶 Practice Examples

• Triangle → 3 sides, 3 vertices
• Square → 4 sides, 4 vertices
• Rectangle → 4 sides, 4 vertices
• Pentagon → 5 sides, 5 vertices

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🎯 Teaching Tip

Use real-life objects (books, tiles, signs)

Ask students to trace shapes with fingers

Let them count sides and corners aloud

learn with an example:

let’s practice! 🖊️