How do you know?I don't know what I've done
Do I still have to start from 3d on solid edge?How do you know?
There's only one mistake.
You're not sure what you did? do it with solid edge and then analyze your design with that of 3d and think about the results.
triangular? Really triangular? highlight on your drawing the 3 sides please... I'm curious as a monkeycomparing side view in 3d with that in the projection that I have, this should be triangular, not trapezoidal