CAD drawing problem

Users questions: Is to draw a straight line, known to the condition that its 72-degree angle to the horizontal, the other with a circle tangent. Circle and horizontal line to draw, draw the straight line method of seeking .
Experts answer: my method for reference only: the first capture the polar axis set at 18 degrees (90-72 = 18); specific methods are: in the bottom of the polar axis Department point right; then point "settings" pop-up "sketch Settings" dialog box; set the incremental angle of 18 degrees (note to check the opening of the polar axis tracking) and then OK. Figure painting steps and then press on it. screen.width * 0.35) this.width = screen .width*0.40 *
  • This information provided by the users.Thanks!