Day 11

Math 444, Friday, 10/22
Sponsor Today's class is brought to you by the Right Triangle.
Topics If two triangles share a common angle, they will be similar if one more pair of angles is congruent. Some important examples are in right triangles or in isosceles triangles.
Class Schedule
  • Opener: Cut a 3 x 5 index card in half; then cut one half again along an altitude into similar sub-triangles. What are the lengths of all the sides?
  • Group: General right triangle dimensions. Thales example. Isosceles triangle with similar subtriangle. Find the dimensions using similarity.. Link to Handout.
  • Area relation among similar triangles.
  • Do before quiz (some in class Monday): Construction Portfolio Part 2. (bring whole portfolio to class Wed 10/27)
Assignments
New

Reading Assignment (due Monday 10/25)

Read Berele-Goldman 5.1, 5.3.
Due Today

Assignment 5A. Link to Solution.
Ongoing Assignment 5B, 5C

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