Hippocrates and Squaring the Circle
Lunes of Hippocrates 4
Lunes of Hippocrates 3
Lunes of Hippocrates 2
Lunes of Hippocrates 1
Pythagoras and Circle Area
Proposed Problem 76: Area of a Circle. Square, Circle, Circular Sector.
Problem 99: Circle Area, General Extension to Pythagoras' Theorem.
Geometry Problem 708. Circle, Tangent, Intersecting, Lune, Area, Diameter.