A Solution to Crux Mathematicorum Problem 5021
A direct-similarity generalization proved with Pappus's theorem and a radical axis, presented without reproducing the original problem statement.
Topic
Projective geometry
3 entries in this archive currently use this topic.
A Solution to Crux Mathematicorum Problem 5109
A synthetic fixed-point argument and a projective generalization, presented without reproducing the original problem statement.
Pappus and Radical Axis for Problem 5021
The Pappus configuration and two circumcircles used in the generalized solution to Crux Mathematicorum Problem 5021.