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Prove a triangle is an isosceles triangle ith P(2,3) A(5,7) and T1,4)
14 years ago

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drwls
Compare the distance between P and A with the distance between A and T. Use the Pythagorean Theoerem.

Both look like 5, to me. That makes A the apex.

Q.E.D.
14 years ago

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