Hi isaac,

Is it possible that you're using you're using the Polyline command to try and draw your rectangle?

I don't think that SketchUp has a "3 pt" style rectangle tool in it, so maybe you are used to drawing lines manually for a vertical rectangle like that?

You can use a polyline for that in MoI too (I can show you a clip for that if you want), but MoI has a kind of wider variety of drawing tools that can be useful in different situations - try the "3 pts" variant of rectangle to draw a rectangle at a more free placement than only on the x/y plane. There is also a "square" snap available in that tool to make it easy to create a square in a more free orientation as well, you can see that kicking in near the top in my last screencap.

- Michael