Monday, June 11, 2012

How do we use right triangle simliarity?


 If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other.
The triangles above are similar.
The sides measuring 8 and x are the longest legs on the right triangles.
Sides measuring 10 and 5 are the hypotenuse of the right triangles.
To find x, create a proportion.

  8      x
--- = ---
10      5

Cross multiply and solve for x.

10x = 40

Answer: x = 4

Guided Practice:
1) Find X


















Citations:
  •  http://mahigulshan97.blogspot.com/
  •  http://www.nexuslearning.net/books/ML-Geometry/Chapter9/ML%20Geometry%209-1%20Similar%20Right%20Triangles.pdf
  • http://www.stopdown.net/education.htm

1 comment:

  1. That's nice way of teaching maths geometry to kids, I am here to share simple definition of triangle.A triangle that has all angles less than 90°and Right Isosceles Triangle has a right angle (90°), and also two equal angles.
    What is a Line Segment

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