A line segment from the center to any point on the circle., RADIUS, CENTER, The fixed point inside the circle from which all points on the circle are the same distance., CENTER, ARC, A line segment passing through the center that connects two points on the circle. It is twice the radius., DIAMETER, TANGENT, A line segment connecting two points on the circle, not necessarily through the center., SECTOR, CHORD, A curved portion of the circle’s circumference between two points., ARC, CIRCUMFERENCE, The total distance around the circle., CIRCUMFERENCE, CHORD, A straight line that touches the circle at exactly one point., DIAMETER, TANGENT, A straight line that cuts the circle at two points., SECANT, CENTER, A region bounded by two radii and the arc between them (like a “slice” of pizza)., CHORD, SECTOR, A region bounded by a chord and the arc above it., SEGMENT, RADIUS

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