Wikipedia states in an isometric view, all angles must be equal to 120.
I am building my assets by making screenshots of some 3D models, so I can get any point of view on them. I tried to capture them with a POV which gave me angles of 120 everywhere, but once I put those 2D assets in an isometric game engine, it was a bit weird looking.
Then I noticed something weird : in Age Of Empires, angles are not of 120 but 127 ! example : http://img1.wikia.nocookie.net/__cb20120311170558/ageofempires/images/7/74/Age_of_empires_building_towncenter.jpg I tried building assets so that their base has an angle of 127 and it's better looking.
What is the reason behind that ? What is the right angle to use ? What do you use ?