This document discusses different types of angles formed when a transversal line intersects two parallel lines. It defines a transversal as a line that intersects two straight lines at distinct points, and notes that when a transversal cuts two parallel lines it forms eight angles. Specifically, it identifies the alternate interior angles, alternate exterior angles, and corresponding angles formed in this configuration.

1. Mathematics
By
Rohini H

2. What are these lines called as ?
PARALLEL
LINES
Intersecting
LINES

3. transversal
a transversal is any line that intersects
two straight lines at distinct points. In
the following figure, N is the transversal
line that cuts L and M lines at two
distinct points.

4. How many angles do you see in this figure ?

5. Alternate interior angles
∠3 and ∠6
∠4 and ∠5

6. Alternate exterior angles
∠1 and ∠8
∠2 and ∠7

7. Corresponding angles

8. Thank you