Show the points (0, –1), (–2, 3), (6, 7) and (8, 3), taken in order, are the vertices of a rectangle. Also find its area.

OK..TAKE A GRAPH DRAW CARTESIAN PLANE N MARK THESE POINTS
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AS SIMPLE AS THT!!
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Of isosceles triangle area = 5cm^2
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The rectangle's vertices are wrong. So area could not be founded.
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What are you looking for?