Question

in the following figure, determine the value of x
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Answer 1

Answer:

X = 110°

Step-by-step explanation:

180-40=140

140÷2=70

70+110=180

so, X=110°

Answer 2

Answer:

suppose it is ∆ABC and angle A is 40°.

The measure of angle BC is same.

therefore,

180-40=140.

140÷2=70.

therefore, angle B and C is 70°.

the opposite angle of C is x.

therefore, x=110°. (alternative opposite angles)