Question

construct a square
the diagram shows a step in the construction of what shape inscribed in a circle?
circle
regular hexagon
square
equilateral triangle

Explanation:

The diagram likely shows perpendicular diameters (vertical: A-B, horizontal: D-C) intersecting at center O. Connecting their endpoints forms a 4-sided figure with equal sides and right angles, characteristic of a square inscribed in a circle.

Answer:

square