Understanding Secant Angles: A Guide to Their Types
TL;DR: When two secants slice through a circle — or a secant and a tangent meet at one — the angle they form depends on where their vertex sits. Inside the circle, on the circle, or outside the circle: three locations, three rules. Each rule comes down to taking either half the sum or half […]
How Do Secant-Tangent and Tangent-Tangent Angles Work? A Complete Guide
Secant-Tangent Angle: Formed when a secant line and a tangent line intersect at a point outside the circle. The angle’s measure is half the difference between the measures of the intercepted arcs. Tangent-Tangent Angle: Formed when two tangent lines intersect outside a circle. This angle’s measure is half the intercepted arc between the two points […]