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Q6. Find the angle measure x in the following figures.

    

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a+70\degree=180\degree (linear pair)                                                   

b+60\degree =180\degree  (linear pair)

a =110\degree                                                                                     

b =120\degree

Sum of all angles of pentagon = 540\degree

110\degree+120\degree+x+x+30\degree=540\degree

260\degree+2x=540\degree

2x=540\degree-260\degree

2x=280\degree

x=140\degree

 

Posted by

seema garhwal

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