CircleAngleAtPoint given a point on a circle and its midpoint, calculates the angle in degrees.

CirclePointAtAngle given an angle in degrees and a circle midpoint and radius, calculates coordinates of a point on the circle at that angle.

FilterByAngle filters the provided points, returning only those that fall within the starting and the ending angle on a circle with the provided mid point.

PointIsIn asserts whether the provided point is inside of a shape outlined with the provided points.

RangeMid returns an angle that lies in the middle between start and end.

RangeSize returns the size of the degree range.

MaxAngle is the largest valid angle in degrees.

MinAngle is the smallest valid angle in degrees.