3. ABCD is a quadrilateral, in which <A = 42, B = 54Â°, <C=ro and D – InterviewSolution

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3. ABCD is a quadrilateral, in which <A = 42, B = 54Â°, <C=ro and D = x + 70Â°, then calculate <C and L D. [SSE 2006]

Answer»

Sum of angles of a quadrilateral = 360=> 42 + 54 + x + x + 70 = 360=> 2x = 360 - 166=> 2x = 194=> x = 97 degrees.

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