you know you're too gay to function when you hear an ad say "let me tell it to you straight" and the first thing you think is I'm not straight-

One is symmetrical, one is radial.

No question so i cant answer

Fist of all, you need to learn about cad and architecture or basic engineering or architecture drawing in order to prorperly use and utilize cad programs.it's as abbreviated computer-aided-drafting. it will the user acquire skills faster since it's aided by technology