Question

22. The exterior angle ZACD of a triangle ABC is 115º (Fig. 11).
If ZB = 650, find ZA. IS ACD > ZA?​

Answer 1

Answer:

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

Hence, In this case ∠A and ∠B

So,

∠A+∠B=140

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as ∠A=∠B

or,2∠A=140

∘

∠A=∠B=70

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