Example 3 - Chapter 9 Class 9 Circles

Last updated at July 26, 2026 by

Example 3 - In figure, ABCD is a cyclic quadrilateral - Examples - Examples

 

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Example 3 In figure , ABCD is a cyclic quadrilateral in which AC and BD are its diagonals. If DBC = 55 and BAC = 45 , find BCD. For segment DABCD DAC & DBC are in same segment, so they will be equal DAC = DBC = 55 Now, BAD = DAC + BAC = 55 + 45 = 100 Now, in cyclic quadrilateral ABCD BAD + BCD = 180 100 + BCD = 180 BCD = 180 100 BCD = 80

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