When the beginning ray of the angle is on the x-axis.
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On a Cartesian plane (or one using polar coordinates), the vertex of the angle must be at the origin and one of the rays must lie along the positive x-axis (point towards the East).
A standard sheet of paper has a right angle at each corner.
On a standard wall clock, 4:00 is an obtuse angle.
The angle the sun's rays hit a given surface on Earth.And the angle is measured from the horizon up to the position of the sun
-305 degrees would be equal to 55 degrees, which can be found in quadrant one in the standard position.