in a classroom 4 friends are seated at the point A,B,C and D as shown in Fig .7.8. champa and chameli walk into the class and after observing for a few minutes champa asks chameli , " Don'the you think ABCD is a square ?" chameli disagrees . using distance formula , find which of them is correct
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Please send with diagram
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From figure, the coordinates of points A, B, C and D are (3, 4), (6, 7), (9, 4) and (6,1).
Find distance between points using distance formula, we get
AB = BC = CD = DA = 3√2
All sides are of equal length. Therefore, ABCD is a square and hence, Champa was correct
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