Question

In the given figure if < 1=< 2 then find the measurement of
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Answer 1

Answer:

Answer

∠1+∠2=100

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(given)

But ∠1=∠2 (vertically opposite angles)

⇒2∠2=100

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⇒∠2=50

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Also ∠2+∠4=180

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(linear pair)

⇒∠4=180

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−50

∘

=130

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