Question

In the following figure, lines l and m intersect each other at a point. Which of the following is false?

Options

• ∠a = ∠b

• ∠d = ∠c

• ∠a + ∠d = 180°

• ∠a = ∠d

Answer 1

∠a = ∠d

Explanation:

∠a = ∠b  ...[Vertically opposite angles]

∠d = ∠c  ...[Vertically opposite angles]

∠a + ∠d = 180°  ...[Linear Pair]

But ∠a ≠ ∠d