Line inverted in a circle
is similar to triangle
. If B is on a line through A and B , the inverted point B' is on a circle.
Drag the points A and B!
Pappus' Theorem and Pascal's generalization (1/4)
Counting Embedded Figures- Rectangles
Polygon man with a face
9.1.3 Pre #1103407 correct A
Multiply by i vectors