Involution
| View Cart ⇗ | Info
The three points in which any line cuts the sides of a triangle and the projections, from any point in the plane, of the vertices of the triangle on to the same line are six points in involution.
Galleries
Geometric Theorems and ProofsSource
Encyclopaedia Britannica (New York: The Encyclopaedia Britannica Company, 1910) 11:702
Downloads
2400×1876, 210.1 KiB
1024×800, 30.2 KiB
640×500, 16.9 KiB
320×250, 7.5 KiB