document.write( "Question 1101368: Use the slopes of the sides of the triangle to prove that the triangle is a right triangle. Show all calculations, please.
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Algebra.Com's Answer #715954 by josgarithmetic(39618)\"\" \"About 
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The two legs are very obviously at right angles. You also see these sides are vertical for one and horizontal for the other. Do you still need calculations for this? \n" ); document.write( "
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