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I am trying to learn the "rules" of the different types of orthographic projections.

For example:

The above adequately/simply explains the rules of trimetric, dimetric and isometric axonometric projections.

Unfortunately, I have not been able to find a nice info graphic that explains the rules of the different types of oblique projections.

The following is my best educated guess:

Cavalier Left rules:
• Two equal axes & angles
• Angles A & B are equal
• Corners MY and MZ are equal in length

Cavalier Right Rules:
• Two equal axes & angles
• Angles A & C are equal
• Corners MX and MY are equal in length

Military Rules:
• Two equal axes & angles
• Angles B & C are equal
• Corners MX & MZ are equal in length

Questions:

  1. Are my above guesses correct?
  2. If not, what are the rules to cavalier and military oblique projections?

I would love some help!

mhulse
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    Those are two particular cases of cavalier projections. In general, they are parallel projections for which the projection direction makes an angle of $\pi/4$ with the viewplane. Lengths of line segments parallel to and perpendicular to the viewplane are unchanged by a cavalier projection. – amd Jun 13 '17 at 08:02
  • Thanks for your reply @amd! For some reason I did not get notification that you left a comment (or I missed it). Anyway, +1 for your help! – mhulse May 10 '18 at 17:17

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