How Do Secant-Tangent and Tangent-Tangent Angles Work? A Complete Guide
A secant-tangent angle formed outside a circle equals half the difference of the two intercepted arcs; a tangent-tangent angle follows the same rule. When the vertex sits on the circle, the angle is half the intercepted arc instead. Below: each case with a worked example. Secant-Tangent Angle: Formed when a secant line and a tangent […]