# Math 3613     Homework

## Regular homework

Due on Tuesday, January 30.

• Page 64:   We did Q6 in class. Now do Q7, Q8 and Q9.

Due on Tuesday, February 6, 2001.

• Page 67:   9, 10.

No homework due Tuesday, Feb 13, 2001 [Mid I].

Due on Tuesday, February 20, 2001.

• Pages 105--110:   8, 12, 13, 16, 17, 18, 36.
• Look at (but do not turn in) 1, 2, 9, 10, 11.

Due Tuesday, March 6, 2000. [We sketched 24, 26, 27 in class!!]

• Pages 105--110:   24, 26, 27, 28.

Due Tuesday, April 3, 2000.

• The two homework questions given out in class!
Get the notes from a classmate if you missed Thursday's lecture.
• Let ABC be a triangle in the euclidean plane.
We've sen in class that the composition [CA][BC][AB] is a glide.
Here [AB] denotes reflection in the unique line [AB] which contains vertices A and B,
and [BC] and [CA] are similarly defined.
Show that the axis of this glide always contians the foot of the altitude (perpendicular)
from B to the line [AC] and the foot of the altitude from C to the line [AB].
• Let l and m be parallel lines. Describe all the isometries you obtain
by taking composites of l and m. Your sequences of composities can be as long
as you like: eg lmlmlmlm etc.

Due Tuesday, April 10, 2001

• page 382 Q59 and Q60. For 60: just describe the group as on page 368.

## Extra homework [gives Mid III grade]

Due on Thursday, February 15, 2000.

• Pages 65, 66, 67:   Do major exercises 1 through 8 (inclusuve).