An ________ is formed when two secant lines intersect on a circle. It can also be formed using a secant line and a tangent line intersecting on a circle
A _________ is an angle whose vertex is the center of the circle and whose sides pass through a pair of points on the circle, therefore subtending an arc. The ________ of a circle consists of two points on the circle and all of the points on the circle that lie between those two points.
The measure of an angle inscribed in a circle is the measure of the _______ Note that this is equivalent to the measure of the inscribed angle is half the measure of the central angle if they intercept the same arc.​