How do you draw the angle in standard position, find the reference angle, and find a positive coterminal angle and a negative coterminal angle for -135°?
Reference angle in any of the quadrants is an acute angle measured with reference to x axis. In the Ist quadrant any angle is its own reference angle.
Positive angles are measured in anticlockwise direction, starting with positive x axis. Negative angles are measure in clockwise direction in the same way.