Question

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A)38
B)62
C)80
D)100

Answer 1

80 degrees

Explanation:

Answer 2

Explanation:

∠5 +∠6 +∠7 = 180 {straight line angle}

38 + 62 + ∠7 = 180

100 +∠7 = 180

∠7 = 180 - 100

∠7 = 80°

l // m

∠3 = ∠7 {Alternate interior angles are congruent}

∠3 = 80°.