Solve for the value of x.

40°

Step-by-step explanation:

It's half the angle at the centre

½×80 = 40

40 degrees.

Step-by-step explanation:

We use the fact that, the measure of the angle subtended by an arc at the circumference of the circle, is half the measure of the angle subtended by that arc at the center of the circle.

So x = 1/2 * 80 = 40 degrees.

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