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Special Right Triangles

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Special Right Triangles September 23rd 2010 Section 5.1 ... Triangle Sum Theorem: The angles in a triangle add up to 180o Definition of Right Triangle: ... – PowerPoint PPT presentation

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Title: Special Right Triangles


1
Special Right Triangles
  • September 23rd 2010
  • Section 5.1 (p. 151 in your book)

2
Radical Rules
  • 1) Multiplying Radicals
  • Outside x OutsideInside x Inside
  • 2) No Radicals in the Denominator
  • We must rationalizemultiply the bottom times
    itself

3
Do you Remember?...
  • Triangle Sum Theorem The angles in a triangle
    add up to 180o
  • Definition of Right Triangle A triangle with an
    angle of 90o

4
Right Triangle Theorems
  • 45o-45o-90o Triangle Theorem
  • Hypotenuse is times as long as each leg

5
45o-45o-90o Triangle Theorem
  • If you know one of the legs
  • Multiply by to find the hypotenuse
  • If you know the hypotenuse
  • Divide by to find the legs

6
45-45-90 Practice Problems
  • FIND THE VALUE OF X
  • A) B)

7
45-45-90 Practice Problems
  • FIND THE VALUE OF X
  • C) D)

8
Classwork
  • p. 153 s 1-6, 11, 12,
  • 14, 16, 18
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