Question

What will be the measurement of ∠a? (a) 65° (b) 115° (c) 130° (d) 230°​

Answer 1

Answer:

65°

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Answer 2

Step-by-step explanation:

Since the sum of any two consecutive angles of a parallelogram is 180o. Therefore,

∠A+∠D=180o and ∠A+∠B=180o

Now, ∠A+∠D=180o

∠A+115o=180o

∠A=65o

and, ∠A+∠B=180o

65o+∠B=180o

∠B=115o

Thus, ∠A=65o and ∠B=115o.

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