Question

which figure shows a semicircle?

Explanation:

A semicircle is exactly half of a full circle, formed by a diameter cutting the circle into two equal parts, with the curved edge being half the circumference. The second figure has a curved segment that equals half of the circle's circumference, matching the definition of a semicircle.

Answer:

The second figure (the one with a black curved line covering exactly half of the circle's perimeter)