10.1.2 (Day 2) Arcs and Angles
Inscribed angle
An inscribed angle is an angle formed by two chords in a circle which have a common endpoint. This common endpoint forms the vertex - C - of the inscribed angle. The other two endpoints - B and D - define what we call an intercepted arc on the circle. ... The minor arc is the smaller of the two arcs (arc BD) while the major arc is the bigger (arc BCD).