Key Lesson 8.8.8 Finding Unknown Side Lengths
Lesson topic: Use the Pythagorean theorem
- Teacher guide
- Practice Problems resource
- CCRS standard: 8.G.7
- Learning goal: Calculate unknown side lengths of a right triangle by using the Pythagorean Theorem, and explain (orally) the solution method. Label the “legs” and “hypotenuse” on a diagram of a right triangle.
- 8.8 Assessment and Practice Problems
If students need additional lessons before this key lesson, use these supplemental lessons.
- 8.8.1 The Areas of Squares and Their Side Lengths
- 8.8.2 Side Lengths and Areas
- 8.8.7 A Proof of the Pythagorean Theorem
Review and Extend
Use these supplemental lessons if needed after teaching this key lesson.
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