Try this:
1. Create 3 points
PT1(X=100 Y=0 Z=0)
PT2(X=0 Y=50 Z=0)
PT3(X=0 Y=0 Z=30)
(You can create parametrs to control these points)
2. Create a Sketch.1 on XY plane
Draw an ellipse an trim it to have only less than 1/4
Use PT1 and PT2 to constraint the end points
3. Create a...
