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2. Find the values of the unknowns x and y in the following diagrams

        

  

i) As we know, the exterior angle is equal to the sum of opposite internal angles in a triangle. Now, As we know the sum of internal angles of a triangle is 180. so, Hence, . ii)  As we know when two lines are intersecting, the opposite angles are equal. So Now, As we know the sum of internal angles of a triangle is 180. so, Hence, . iii) As we know, the exterior angle is equal to...

1.  Find the value of the unknown x in the following diagrams

        

As we know that the sum of the internal angles of the triangle is equal to . So, i)  ii)  iii)  iv)  v)  vi) 
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