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Mathematics, 07.07.2019 05:00 brryan2751
Prove that the sum of the length of the diagonals of a quadrilateral is less than the perimeter, but greater than the half of the perimeter of this quadrilateral. and prove that the sum of the lengths of the three medians in a triangle is smaller than the perimeter of the triangle. (the statement is true for the altitudes as well.)
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Prove that the sum of the length of the diagonals of a quadrilateral is less than the perimeter, but...
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