This page demonstrates some applets related to Java applications discussed in Chapter 2 of Computer Graphics for Java Programmers.

Section 2.13. Define a polygon to be divided into triangles. After defining the final vertex, click on the first vertex again, to indicate that the polygon is complete.

Exercise 2.1. Circumscribed circle

Exercise 2.2. Arc through three arbitrary points

Exercise 2.3. Rounded corner.

Exercise 2.4. The incircle and the three excircles of an arbitrary triangle.

Exercise 2.5. Tree of Pythagoras