Question

In the given figure PQ||RS. Find the value of ABC?
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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

since vertically opposite angles

therefore ∠BAC= 20°

since we know that exterior angle = sum of two opposite interior angles

so, ∠BAC+∠ABC=100

⇒20+X=100

⇒X=80°

THERFORE ANSWER IS 80°