How inscribed angles subtended by the same arc related in a circle?

All the inscribed angles subtended by the same arc in a circle measure same. In other words the measure of all the inscribed angles subtended by the same arc is equal. I have fully explained the relationship below;

Following are the links to my previous posts on circle geometry

https://steemit.com/math/@mathworksheets/circle-geometry-lesson-plan-1

https://steemit.com/math/@mathworksheets/circle-geometry-lesson-2-the-tangent-and-radius-relationship

https://steemit.com/math/@mathworksheets/circle-geometry-lesson-3-properties-of-a-chord

https://steemit.com/math/@mathworksheets/circle-geometry-central-angle-and-inscribed-angle