Lines and Angles

**Corresponding angles**

When a transversal intersects two lines *l* and *m*, the** c**orresponding angles so formed at the intersection points are named as follows:

∠1 and ∠5, ∠2 and ∠6

∠3 and ∠7, ∠4 and ∠8

**Corresponding angles axiom**

If a transversal intersects two parallel lines, then each pair of corresponding angles is equal.

In the above figure, if lines *l* and *m* become parallel then we will have following pair of equal angles:

∠1 =∠5, ∠2 =∠6, ∠3 =∠7 and ∠4 = ∠8

**Converse of corresponding angles axiom**

If a t…

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