, 10.10.2019 01:40 hollycoleman13

# Verify that parallelogram abcd with vertices a(-5,-1), b(-9,6), c(-1,5) and d(3,-2) is a rhombus by showing that it is a parallelogram with perpendicular diagonals.

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Verify that parallelogram abcd with vertices a(-5,-1), b(-9,6), c(-1,5) and d(3,-2) is a rhombus by...
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