2. On Thursday 8/31, hand in exercises 6 (proof of Prop. 2.4 and 2.5 only) and 9d (with explanations) from chapter two. For 9d you should use that a great circle is the intersection of the sphere is a plane through its center.

3. On Tuesday 9/15, hand in exercises 2a and 6 from chapter 3.

4. On Tuesday 9/19, hand in chapter 3 problems 24, 27 and 32.

5. On Tuesday 10/3, hand in exercises 5 (justifying the steps part only) and 6b from chapter 4.

6. The Sketchpad assignment concerning the SL theorem is due Thursday 10/5.

7. On Tuesday 10/10, hand in the proofs of propositions 4.7 and 4.9.

8. The worksheet on inversions is due Tuesday, 10/24.

9. On Thursday, 10/26, hand in exercises 6, 8 and 12 from chapter 6.

10. Exam 2 will be on Tuesday, October 31. It will cover Chapters 4-5 and up through Proposition 6.5 in Chapter 6.

11. The eight GSP scripts are due this Thursday 11/9.

12. The worksheet on hyperbolic reflection is due Tuesday 11/14.

13. The extra credit assignment is due next Thursday 11/16.