1.

If ∠1 + ∠2 < 180° what can you say about lines l and m?

Answer»

∠1 & ∠2 are two interior angles that lie on same side of transversal ‘n’. 

As their sum is less than 180°, the two lines intersect at that side. 

∴ The two lines ‘l’ and ‘m’ are two intersecting lines at the side of the angles ∠1 & ∠2.



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