444 Monday 10/17

• Problem solving as part of theorem proving.
  • Start at the two ends
• Ratios, ratios, ratios

Link to Class #9 Page

444 Wednesday 10/19

A special isosceles triangle, with applications to a regular polygon.

Link to Class #10 Page

487 Wednesday 10/19 Lab 4

• Carpenter Locus theorem: the locus of all vertices of right angles ACB, for fixed A and B.
• Inscribed Angle Theorem

444 Friday 10/21

• Half-period quiz
• Loose ends with constructions of ratios by parallel projection and roots by geometric mean or Pythagorean theorem.

Link to Class #11 Page