623 - A block - due Friday 14.09.12

1. finish 12.6 ws - fundamental theorem of similarity

2. quiz friday - 12.1 - 12.4 (16 points)

what do you need to know how to do?

12.1 - construct a size change on a coordinate plane
        - show one pair of corresponding sides are parallel (slope formula)
        - show one side is k times the length of a corresponding side

12.2 - construct a size change without a coordinate plane

12.3 - properties of size changes (same shape and corresponding angle measures)
        - show corresponding side lengths proportional
        - i = k (p)
        - "enlargements of photos"

12.4 - proportions
        - set up multiple true proportions (use reciprocals, means exchange)
        - "rearrange" a proportion to solve for a single variable