Question

In the following figure, PQ || RT. Find the value of a + b.

Answer 1

Since, PQ || RT and PR is a transversal.

∴ a = 45°  ...[Corresponding angles]

Now, PQ || RT and RQ is a transversal.

∴ b = 55°  ...[Alternate interior angles]

Now, a + b = 45° + 55° = 100°