Verified answer

Answer:

Correct option is A)

Let ∠AOC=x and ∠COB=y. Then, ∠BOD=x and ∠DOA=y.

Now, ∠AOC+∠COB+∠BOD=270

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⇒x+y+x=270

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⇒2x+y=270

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But, x+y=180

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∴x=y=90

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Step-by-step explanation:

Hope it helps you

Radhe Radhe

Step-by-step explanation:

∠AOC=(3x−10)∠BOD=(20−2x)

Solution,

Know that the opposite angle of two intersecting lines are equal.

When two lines AB and CD intersect, then angle AOC and angle BOD are equal.

∠���=∠���⇒3�−10=20−2�⇒5�=30⇒�=6∠AOC=∠BOD⇒3x−10=20−2x⇒5x=30⇒x=6

Hence the value of x is 6.

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