Kindergarten Shapes: Triangles

Learn about triangles

What You'll Learn

  • Identify triangles
  • Know that triangles have 3 sides
  • Count 3 corners

📖What is a Triangle?

A triangle has 3 sides and 3 corners. "Tri" means three!

💡

A slice of pizza, a yield sign, or a roof can be shaped like a triangle!

Worked examples

Real problems from the practice worksheets, solved one step at a time.

  1. Example 1

    Which shape has 3 corners: a triangle or a rectangle?

    1. A triangle has 3 corners.
    2. A rectangle has 4 corners.
    3. So the answer is the triangle.

    Answer: triangle

  2. Example 2

    Which shape has fewer sides: a hexagon or a triangle?

    1. A triangle has 3 sides.
    2. A hexagon has 6 sides.
    3. 3 is fewer than 6.
    4. So the answer is the triangle.

    Answer: triangle

  3. Example 3

    What shape is this?

    1. Count its straight sides and its corners.
    2. This shape has 3 straight sides and 3 corners.
    3. A shape that has 3 straight sides and 3 corners is a triangle.

    Answer: triangle