Determine whether Triangle GHI is a right triangle for the given vertices.?

11. G(2,7) H(3,6) I(-4,-1)

12. G(-6,2) H(1,12) I(-2,1)

I forgot how to do these :P so help me pleaaase! I need answers by tomorrow thanks a lot in advance.

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  • 10 years ago
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    I think tht is geomatry

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