Can you tell me why there is a differece between a ellipse layout and an Oval laout when the major and minor axis' start the same. I cut out some ellipses for window trim and the dimensions lost an 1/8" near the tight curve. Thank you ilex
Hope you don't mind me sending you a message; I just wanted to say how much fun I have had out of studying your contributions around roofing trigo/geometry.
Also to send you this link:
This is a trigonometrical derivation of the miter and blade angles for cutting crown moldings.
I wonder if we can step from there to your hip rafter backing angles? Or vice versa.
I am tending to use the pyramid as the neutral paradigm.
Your dihedral derivation/calculation was my entry point to this fascinating world.
So we are talking about the dihedral from two, unequal backing angles.