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Distance formula (geometry applications)

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A left parenthesis, 5, comma, 8, right parenthesis, B left parenthesis, 2, comma, 6, right parenthesis, C left parenthesis, 5, comma, 4, right parenthesis, and D left parenthesis, 8, comma, 6, right parenthesis are vertices of a quadrilateral A, B, C, D.
Which type of quadrilateral is A, B, C, D?
Note: Pick the most precise option.
Choose 1 answer: