Euclid's Elements - Book III, Proposition 3
A chord passing through the center of a circle (a diameter) will bisect a chord that does not pass through the center if and only if they are perpendicular to one another.
rings on sphere
Heebe Unit 5 Sketch
Textbook Exercise 6.1, #5-9 pg. 139-140
y = f(x - c)
Exploration 1 - Proportionallity with Angle Bisector
Reflect Points Explorer