Definition:Complete Quadrangle/Diagonal Point
Jump to navigation
Jump to search
Definition
Let $A$, $B$, $C$ and $D$ be the points of a complete quadrangle $ABCD$.
The diagonal points of $ABCD$ are the points of intersection of the lines:
- $AB$ and $CD$
- $AC$ and $BD$
- $AD$ and $BC$.
Also see
- Results about diagonal points can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): diagonal point
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): quadrangle
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): diagonal point
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): quadrangle