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The Pythagorean theorem. Algebra 1 CP. Warm up. Draw a right triangle. What characteristics do you know about it? Angles? Sides?. Right triangle Pythagorean theorem. Example 1. A right triangle has legs of lengths 9cm and 12cm. What is the length of the hypotenuse?.
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The Pythagorean theorem Algebra 1 CP
Warm up • Draw a right triangle. What characteristics do you know about it? Angles? Sides?
Example 1 • A right triangle has legs of lengths 9cm and 12cm. What is the length of the hypotenuse?
Fire Rescue • A fire truck parks 16ft away from a building. The fire truck extends its ladder 30 ft. How far up the building from the truck’s roof does the extension ladder reach?
The converse of the pythagorean theorem • If a2 + b2 = c2, then the triangle is a right triangle.
Example 3 • A triangle has sides of lengths 7, 9, and 12. Is it a right triangle?
Homework • P. 416-417 #1-13 odd, 21-24