Pythagorean theorem

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  • What are we doing today?
  • I think we are learning about the pythagorean theorem.
  • Yes, we are learning the pythagorean theorem.
  • The Pythagorean theorem.
  • When you have the length of two sides of a right triangle, you can use this to find the last one.
  • the square of the hypotenuse is equal tothe sum of the squares of the other two sides
  • A
  • A2 + B2   =  C2
  • B
  • C
  • he longest side of the triangle is called the hypotenuse
  • 9
  • 3
  • 16
  • 4
  • 5
  • 25
  • 9 + 16 = 25
  • 32 + 42 = 52
  • 5
  • 12
  • C
  • Start with:a2 + b2 = c2 Put in what we know:52 + 122 = c2 Calculate squares:25 + 144 = c2 25+144=169:169 = c2 Swap sides:c2 = 169 Square root of both sides:c = √169 Calculate:  C= 13
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