3/11/2024 0 Comments Prove abcd is a parallelogram![]() ![]() ![]() Unlike any other convex polygon, a parallelogram cannot be inscribed in any triangle with less than twice its area.The perimeter of a parallelogram is 2( a + b) where a and b are the lengths of adjacent sides.If it has four lines of reflectional symmetry, it is a square. If it also has exactly two lines of reflectional symmetry then it must be a rhombus or an oblong (a non-square rectangle). ![]()
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