Question

calculate x find the value of ​

Answer 1

70 +x =110. (using exterior angle property which says that sum of interior opposite angle is equal to one of the outer angle )

hence ,

x = 110- 70

x= 40

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Answer 2

C+D=B......(by exterior angle theorem)

110°=70°+x

x=110-70

x=40°

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