lines that divide figures in half so that when the figure is folded on that line there is no overlap.
an enclosed figure on which all points are an equal distance from a center point.
the point in the center of the circle.
line segment whose endpoints are on a circles center point and its circumference.
the distance around the outer edge of a circle.
line segments whose endpoints are on a circles circumference.
chord that passes through the circles center point.
part of a circles circumference.
an angle whose vertex is the center point of a circle.