Q. 165.0( 3 Votes )

In Fig. 14.112, A

Answer :

Given,


ABCD is a trapezium


= A+D = 180°


=2x+10°+x+20° = 180°


= 3x+30°= 180°


= x=


B+C = 180°


= y + 92° = 180°


= y = 180°-92° = 88°


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