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01-03-2021
Mathematics

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Verify that parallelogram ABCD with vertices A(-5, -1), B(-9, 6), C(-1, 5), and D(3, is a rhombus by showing that it is a parallelogram with perpendicular diagonals.

Verify that parallelogram ABCD with vertices A5 1 B9 6 C1 5 and D3 is a rhombus by showing that it is a parallelogram with perpendicular diagonals class=

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01-03-2021

multiplication of the gradients of the two diagonals is equals to -1 if they are perpendicular

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