Math, asked by krish300, 1 year ago

do only tenth and ninth problem

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Answered by khiladiak4

ans-9)aob=box are congruent pair
ans-10)x=50°

krish300: I know answer is 15 how you can say 50 is answer

krish300: I know answer is 50 how you can say 50 is answer

khiladiak4: your ans is wrong

khiladiak4: angle acb=70° by alternate interior angle

krish300: sorry first message is wrong

khiladiak4: and x can be find by using the fact that sum of all the interior angle is equal to 180°

krish300: second is correct

Answered by perfectstormswift

Q.9) ∠AOB and ∠BOC will be the answer to your question since both the angles measure equal.

Q.10) Given that AD║BC

So, ∠ACB= ∠DAC (Alterante Interior Angles)
∠ACB= 70°

Now ∠BAC+ ∠ABC + ∠ACB= 180° (Angle sum property)

Substitute the values

x° + 60° + 70° = 180°
x°= 180° - 130°
x°= 50°

Ans= 50°

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