Answer :

90 = (1/2)(43 + m(arc)XY)

180 = 43 + m(arc)XY

m(arc)XY = 137

Answer is A.

A circle is a curve sketched out by a point moving in a plane. The correct option is A, 137°.

What is a circle?

A circle is a curve sketched out by a point moving in a plane so that its distance from a given point is constant; alternatively, it is the shape formed by all points in a plane that are at a set distance from a given point, the centre.

In the given figure since W is the midpoint of ZY, therefore, the measure of arc ZV and arc VY will be equal; and ZX and XY will be equal. Also, it is given that the measure of arc ZV is 43°. Therefore, we can write,

mZV + mVY + mXY + mXZ = 360°

43° + 43° + mXY + mXY = 360°

2(mXY) = 360° - 43° - 43°

mXY = 274/2

mXY = 137°

Hence, the measure of arc XY is 137°.

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