Question

Answer from picture.​

Answer 1

Answer:

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Step-by-step explanation:

a.

x+40=180° (Linear pair)

x=180-40

x=140°

b.

x=50° (Vertically opposite angle)

Answer 2

Answer:

a)

∵ Sum of ∠40° and ∠x = 180° (Straight angle).

∴ m∠x = 180 - 40

∴ m∠x = 140°

b)

∵ ∠50° and ∠x are vertically opposite angles

∴ m∠x = m∠50°

∴ m∠x = 50°