plz ans this question . this question is from maths class 7 .
ans question no 8 .
not 9 .
plz ans mates .
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∠6 = x + 74
∠2 = 6x - 21
∠2 = ∠6 --- [alternate interior angles]
x + 74 = 6x - 21
5x = 95
x = 19
∴ ∠2 = ∠6 = 93°
Now, ∠5= 180° - ∠6 --- [linear pair]
∠5 = 180° - 93° = 87°
∠6 = ∠4 --- [vertically opposite angles]
∠2 = ∠8 --- [vertically opposite angles]
Also,
∠5 = ∠3 --- [vertically opposite angles]
∠1 = ∠7 --- [vertically opposite angles]
∠3 = ∠5 --- [alternate interior angles]
∴ ∠2 = ∠8 = ∠6 = ∠4 = 93°
∠1 = ∠3 = ∠5 = ∠7 = 87°
Hope it helps!
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