Posted by **Swassy** on Thursday, January 24, 2008 at 6:46pm.

is triangle DEF with verticies D(-3,-4), E(2.-5), F(0,1) a right triangle?

- geometry -
**Damon**, Thursday, January 24, 2008 at 7:41pm
Ah, a slightly different twist :)

For the third time, find the squares of the lengths of the three sides.

If the sum of the squares of the two smaller sides = the square of the third side, it is.

like if

c^2 = a^2 + b^2 it is right

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