Pythagorean Theorem
Learning Objective
I can use the Pythagorean Theorem to find the missing side length of a right triangle.
Lesson Flow
Watch Video
The Pythagorean theorem intro | Right triangles and trigonometry | Geometry | Khan Academy
Khan Academy
Guided Notes
Key concepts students will learn:
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The Pythagorean Theorem applies to right triangles, which contain one angle that measures 90 degrees.
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The longest side of a right triangle is called the hypotenuse, and it is always opposite the right angle.
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The Pythagorean Theorem states that a² + b² = c², where c represents the length of the hypotenuse, and a and b represent the lengths of the triangle's other two sides.
Practice
10 questions • Multiple choice & Short answer
Exit Ticket
“A right triangle has a hypotenuse of 13 cm and one leg that is 12 cm long. What is the length of the other leg? Show your work.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
