Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Mini-Lesson Extension

#5

Line BC is a tangent line to Circle A since it intersects the circle in exactly one point. Drag point B around the circle. What angle measure is formed between the radius and the tangent line? What conjecture (rule) can you make about the angle between a radius of a circle and the tangent intersecting the radius?