Wednesday, January  29, 2014
Class #3

Measurement and the Pythagorean Theorem (PT)

Show video on PT.
Area of triangles = 1/2 bh
Area of parallelogram= bh
Scaling: a linear scale change of r gives area change of factor r2.
3 questions: running, moat, wind power...
Proof of the PT: Similar right triangles: c = a2 /c + b2 /c