Which of the following is a step used in the construction of an equilateral triangle inscribed in a circle?

Draw an arc centered at an endpoint of a diameter using the circle’s radius. Where that arc intersects the circle, each intersection is one radius-length from the diameter’s endpoint, and the two intersection points are also one radius-length apart. Connecting those two points to the diameter endpoint forms an equilateral triangle, so the correct choice is “Draw two line segments connecting the points where the arc intersects the circle and an endpoint of the diameter.”

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