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March 6, 2015

March 6, 2015

Posted by **anthony** on Saturday, April 11, 2009 at 11:16pm.

The triangle of the trapezoid is triangle ABE and the bases are BC and AD.

Could you also give me a link about the theorems and postulates of a two column proof?

- math -
**Reiny**, Saturday, April 11, 2009 at 11:26pmI assume BE is the height of the trapezoid.

then AE=8

and by Pythagoras

AB^2 = 64+81 = 145

AB = √145 = 12.042

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