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In a classroom, 4 friends are seated at the points 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’t you think ABCD is a square?” Chameli disagrees. Using distance formula, find which of them is correct. Q.5

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In coordinate geometry  how i solve the question of  class 10  easily and quickly  . Its very important  question  of coordinate geometry.In a classroom, 4 friends are seated at the points 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’t you think ABCD is a square?” Chameli disagrees. Using distance formula, find which of them is correct.

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  1. 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

    NCERT Solutions for Class 10 Chapter 7-6

    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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