Geometry - Loudoun County Public Schools

In a plane, a line is _____ if and only if the line is _____ to a radius of a circle at its endpoint on the circle. Is line m tangent to ⊙Q? Why or why not? Practice with Tangents: Ex1: In the diagram, B is a point of tangency. Ex2: is a tangent to ⊙C. Find x. Find the radius r of ⊙C. Ex3: is a radius of ⊙C. ................
................