Day 15

Math 444, Monday, 11/01
Sponsor Today's class is brought to you by the Regular Polygons.
Topics Ratios and angles in special triangles, rectangles and regular polygons
Class Schedule
  • Opener. Golden Rectangle.
  • Exploring the special isosceles triangle from Assignment 6A. Answer to 6.2.
  • Handout with Pentagons
  • Connections with rectangles and regular pentagon. .This triangle is the Golden Isosceles triangle that is part of the regular pentagon/pentagram figure.
  • Practice: ratios in triangles and trapezoids. Here is an extended answer to problem 6.3.

Note: BG does not have much about pentagons or the Golden Ratio (the construction is problem 6.7). Therefore you should read these Notes on the Golden Ratio and Pentagon Construction..
Assignments
New

Reading Assignment (due Wednesday 11/03)

Read Berele-Goldman 6.1 and 8.1. Read Notes on Golden Ratio.

Note, the sections 7.1, 7.3, 7.5 cover topics already explored in lab. You may find it useful to read over these sections as review.
Due Today

Assignment 6A

Read Berele-Goldman 5.5.
Ongoing Assignment 6B (due 11/3)

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