9. 

In the above figure both RISK and CLUE are parallelograms. Find the value of x.

Answers (1)

\angle SKR +\angle KSI = 180\degree              ( adjacent angles are supplemantary)

\angle KSI = 180\degree-120\degree

\angle KSI = 60\degree

\angle CLU=\angle UEC = 70\degree               (oppsite angles are equal)

x+ \angle UEC+\angle KSI = 180\degree     (sum of angles of a triangle is 180\degree)

x+ 70\degree+60\degree = 180\degree

x=180\degree -130\degree

x=50\degree

 

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