If two lines touch each other in such a way that there is a point in common then these lines are called intersecting lines.
That common point is called a Point of Intersection.
Here, line l and m intersect each other at point C.
If a line intersects two or more lines at different points then that line is called Transversal Line.
When a transversal intersects two lines then they make 8 angles.
Some of the angles made by transversal-
Types of Angles | Angles shown in figure |
Interior Angles | ∠6, ∠5, ∠4, ∠3 |
Exterior Angles | ∠7,∠8,∠1,∠2 |
Pairs of Corresponding Angles | ∠1 and ∠5,∠2 and ∠6, ∠3 and ∠7,∠4 and ∠8 |
Pairs of Alternate Interior Angles | ∠3 and ∠6,∠4 and ∠5 |
Pairs of Alternate Exterior Angles | ∠1 and ∠8,∠2 and ∠7 |
Pairs of Interior Angles on the same side of the transversal | ∠3 and ∠5,∠4 and ∠6 |