Hey, I decided to refresh my geometry skills and need an app to draw pyramids circles etc. i saw a vector drawer and checked out some youtube videos. don't seem to be quite suitable. I just want to have an angle measurement tool and a compass (see pictures, don't know what its called in english). is there an app like this? google searched it and didn't find anything. i searched in german, because i don't quite know the english terms for this stuff. cheers ps. i know i could just draw the stuff, but the iPad makes learning more fun. i got notepad which is a great app, just need something to draw it so i can paste it in there.