Question

Show that the points A(1,1), B(-1,5), C(7,9) and D(9,5) are the vertices of a rectangle ABCD

Answer 1

Answer:

Step-by-step explanation:

By using distance formula, you can find that

AB=CD and BC=AD (in a rectangle opposite sides are equal)

Join AC and BD

Also AC=BD (in a rectangle diagonals are equal)

Answer 2

Step-by-step explanation:

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