SECANT TANGENT INTERSECT IN THE EXTERIOR OF A CIRCLE
Activity: Find it out by Yourself!
Given: In the figure below, line CM is a secant and line LMis a tangent intersecting outside the circle at point M. Arc LEC and Arc LGare the two intercepted arcs of angle LMC.
Move point M to observe the relationship of two arcs on the exterior angle.
Question: Is there any relationship among the measures of Angle LMC, Arc LG,
and Arc LEC? Describe the relationship, if there is any.