The Pythagorean Theorem

Free to teach as-is — the teacher guide, student handout, and slides are included.

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Objective

I can solve problems involving right triangles by using the Pythagorean theorem to find missing side lengths.

Part 1 of 3

Warm-up video

TED-Ed · 5:17Vetted channel

We don't generate video — this one is by TED-Ed on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

7 questions

1

A right triangle has one leg measuring 5 units and the hypotenuse measuring 13 units. What is the length of the other leg?

2

If a right triangle has legs of lengths 8 and 15, calculate the length of the hypotenuse.

Part 3 of 3

Exit ticket

Quick comprehension check

A right triangle has one leg measuring 7 units and a hypotenuse measuring 25 units. Find the length of the other leg. Show all work. A right triangle has legs measuring 9 units and 12 units. Calculate the length of the hypotenuse. Show all work.

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

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