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ABCD is a cyclic quadrilateral

A20

B60

C160

D120

Answer:

C. 160

Read Explanation:

<B+<D = 180° 3x + 6x = 180° 9x= 180° x=20° <A + <C = 180° x + <C = 180° <C= 180-x = 18- - 20 = 160°


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