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January 31, 2015

January 31, 2015

Posted by **Colleen** on Wednesday, May 23, 2012 at 7:25pm.

- geometry -
**Damon**, Wednesday, May 23, 2012 at 7:39pmThe two little triangles are similar to the big one because they are all right triangles sharing one angle so sharing all angles (sum is 180)

A = CAD = BCD

B = CBD = ACD

CD/6 = 4/CD similar triangles

CD^2 = 4*6

CD = 2 sqrt 6

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