What is a Triangle?

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Objective

I can identify triangles among different shapes.

Part 1 of 3

Key concepts

3 concepts

  1. 1

    A triangle is a shape that always has three sides.

  2. 2

    A triangle also has three points, also called corners.

  3. 3

    A square has four sides, and a circle is round, so neither of those shapes is a triangle.

Part 2 of 3

Practice

3 questions

1

How many sides does a triangle have?

2

A shape has four sides. Is it a triangle? Answer yes or no.

Part 3 of 3

Exit ticket

Quick comprehension check

Draw a triangle. How many sides does it have?

Sample answer included in the free materials

Get the materials

Teacher guide, student handout, and slides — free, in Google Docs format

  • Teacher Guide

    Complete lesson plan with answer keys and alternate activities

  • Student Handout

    Printable worksheet

  • Slides

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