Arc length is a fraction of circumference. Area of a sector is a fractions of the area of a circle. Both can be calculated using the angle at the centre and the diameter or radius. Practice circle ...

this is probably pretty silly but i can't prove to myself that the intuition is 100% correct...<br><br>given a semimajor and semiminor axis, i need to draw ellipses in opengl. i thought the easiest ...