Prove that a cyclic parallelogram is a rectangle class 9
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Let ABCD be a cyclic quadrilateral such that its diagonals AC and BD are the diameters of the circle
through the vertices A, B, C, and D.
As, AC is a diameter and angle in a semi-circle is a right angle
⇒∠ADC = 900 and ∠ABC = 900
Similarly,
BD is a diameter.
⇒∠BCD = 900 and ∠BAD = 900
Thus, ABCD is a rectangle
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Hi friend
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