I wondered about this. Is there a way to lock (like with SHIFT key or something) the tangent, perp., etc. before I click?
These first two are good examples from the top view.
I started with the triangle shape to get the proper angles.
I then copied the lines twice -z axis.
I added some guide lines and made a connecting circle with tangent (trimmed it later).
Then I made a couple of circles, rotated them to line up with the big triangle, and trimmed them.
...after adding the rest I noticed the errors and started over. Keep in mind, this was an incomplete first draft so it looks awful. I was able to make corrections and finish the shape.
Forgive my simple descriptions. I am a hobbyist and not familiar with the terminology of 3D programs. If I don't make sense, please let me know and I'll try to clarify.
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