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christinaxxx
how do u draw the locus of points in space equidistant from the vertices of a square?
In 2-D, the locus would be the center of the square, the point of intersection of the diagonals. Imagine a perpendicular line to the plane of the square and passing through the square's center. That is the 3-d locus. Draw a square, place a dot for its center, and stick a pencil through the center of the square, keeping the pencil perpendicular to the square.