26 Aug
2020
26 Aug
'20
4:20 p.m.
Start by drawing the diagonals, two arbitrary orthogonal line segments. -- Gene On Wednesday, August 26, 2020, 3:10:50 PM PDT, Andy Latto <andy.latto@pobox.com> wrote: On Wed, Aug 26, 2020 at 5:54 PM Dan Asimov <dasimov@earthlink.net> wrote:
Okay, second guess:
Aren't those just the rhombi and kite-shapes?
Both of these have some extra symmetry that orthodiagonal quadrilaterals don't need to have. Take for example (0,1), (2,0) (0, -3,) (-4, 0) whose diagonals are segments of the axes, intersecting perpendicularly at the origin, but has no symmetry. Andy
----- Orthodiagonal Quadrilateral: A quadrilateral whose diagonals cross at right angles. -----