CLASS-8
TRANSVERSAL LINE

Transversal –

A transversal is a straight line that intersects two or more lines in a plane. In the figure the transversal EF intersects the two lines AB & CD at the points P & Q respectively.

The angles formed at the point P are ∠APE, ∠BPE, ∠APQ and ∠BPQ. The angles formed at the point Q are ∠CQP, ∠DQP, ∠CQF and ∠DQF.

These angles, labeled 1 to 8 for convenience, are called –

Exterior Angles - ∠4, ∠3, ∠5, and ∠6

Interior Angles - ∠1, ∠2, ∠8, and ∠7

Alternate Angles – The pairs ∠1, ∠7 and ∠2, ∠8

Corresponding Angles – The pairs ∠1, ∠5; ∠2, ∠6; ∠3, ∠7; and ∠4, ∠8

Co-interior Angles – The pairs ∠1, ∠8 and ∠2, ∠7