Diagonal Points

Some articles on points, diagonal points, point:

Projective Plane - Subplanes - Fano Subplanes
... If you consider a quadrangle (a set of 4 points no three collinear) in this plane, the points determine six of the lines of the plane ... The remaining three points (called the diagonal points of the quadrangle) are the points where the lines that do not intersect at a point of the quadrangle meet ... The seventh line consists of all the diagonal points (usually drawn as a circle or semicircle) ...
Complete Quadrangle - Diagonals
... meet in pairs to form three additional points called the diagonal points of the quadrangle ... Similarly, among the six points of a complete quadrilateral there are three pairs of points that are not already connected by lines the line segments connecting ... Due to the discovery of the Fano plane, a finite geometry in which the diagonal points of a complete quadrangle are collinear, some authors have augmented the axioms of projective ...

Famous quotes containing the word points:

    Every man has to learn the points of the compass again as often as he awakes, whether from sleep or any abstraction.
    Henry David Thoreau (1817–1862)