Proving that an inscribed angle is half of a central angle that subtends the same arc.
Inscribed angles 1 is a free educational video by Khan Academy.It helps students in grades 9,10,11,12 practice the following standards HSG.C.A.2.
1. HSG.C.A.2 : Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle.