Prove that area of an arbitrary triangle is less than one fourth of the square of its perimeter. (The question is from my sequences and series text)
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Hello fardeen_gen Originally Posted by fardeen_gen Prove that area of an arbitrary triangle is less than one fourth of the square of its perimeter. (The question is from my sequences and series text) Do you know the formula for the area of a triangle: , where the semi-perimeter ? Well, each of is less than . So . Grandad
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