1.

In the figure, m∥ n and l is a transversal. If ∠1 = 123° then what is ∠7?

Answer»

In the given figure 

∠7 = ∠1 (Alternative exterior angles) 

Given ∠1 = 123° 

So, ∠7 = ∠1 = 123° 

∴ ∠7 = 123° .



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