Following up on the ellipse.
Several folks wrote and said that they were having some difficulty getting their heads around this method. Well don’t despair. When I first read about this method, it took me a couple of days for it to sink in. And, if you don’t have much experience with projective drawing, it’ll take a bit of cogitation. Of course, at my age, everything takes a long time to sink in. But it doesn’t necessarily stay “sunk in” for long.
But here’s a little more graphic information that might help. First off, I elongated the major axis to make the model a little more easily understood. So remember, A-B is the Minor axis, A-C is the Major axis. I’ve divided the A-B line into equal segments (with a couple of little “cheater” segments at the ends.
Again, I extend the segments at right angles to the diagonal line and transfer the line measurements…
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