No math lesson would be complete without examples. A short video works through examples highlighting circle theorems. This includes problems where individuals must take multiple theorems into account to determine the solution.

Circle the angles and intercept the arcs. The video introduces three theorems relating to inscribed angles in circles. Using drawings, the segment of a playlist on geometry illustrates the measure of angle along with theorems about two...

Find supplementary information about inscribed angles. A section of a large geometry playlist introduces the relationship of angles in an inscribed quadrilateral. The presentation works through examples that use the relationship between...

Relationships in circles build from the many connections made throughout the geometry course. The instructor in the video explains these connections as she builds the concept of inscribed angles. Using examples, the narrator highlights...

Circles are ripe with theorems. Viewers of a YouTube video watch as the narrator describes a set of eight theorems on circles. The video shows a diagram for each theorem and provides a brief explanation for each one.

Proof that the measure of an inscribed angle is half the measure of a central angle when the angles intercept the same arc. [14:16]

In this lesson, you will show angle relationships in cyclic quadrilaterals by using the Central Angle Theorem. [3:27]

Proof of the formula relating the area of a triangle to its circumradius.

Sal finds a missing inscribed angle using the inscribed angle theorem.

Using either the inscribed angle theorem or the fact that two inscribed angles that intercept the same arc must be congruent.

Proving that an inscribed angle is half of a central angle that subtends the same arc.