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Introduction To Trigonometry

Question
CBSEENMA10006983

Name the type of quadrilateral formed, if any, by the following points, and give reasons for your answer:
(-1, -2), (1, 0), (-1, 2), (-3, 0)

Solution
Let the given points be A(-l, -2), B(1, 0), C(-1, 2) and D(-3, 0).

Since, all four sides of the quadrilateral are equal and diagonals are also equal, so the given points form square.