1. A line has two end points at (21, 12) and (29, 16). Plot the intermediate points using Bresenhams line drawing algorithm.

2. Using DDA Algorithm draw a line with end points (6, 14) and (10, 20).

3. Use the mid-point circle algorithm to draw the circle centred at origin with radius 12.

4. Use midpoint ellipse algorithm with radius rx=4 and ry=10 and centred at the origin.