Now use the information you already have about finding the equation of a line and apply it to the dashed lines shown in these triangles. Remember, to find the equation of a line you need a point ...

Triangles OAM and OBM are congruent, so it follows that \(AM=MB.\) Therefore, M is the midpoint of AB, and the chord has been bisected. Since these properties allow us to form a right-angled ...