standard_description: Prove theorems about triangles. Theorems include: a line parallel to one side of a triangle divides the other two proportionally, and conversely; the Pythagorean Theorem proved using triangle similarity.
problem_activity: Problem 1
Solve each problem in two different ways.
a.
$${3{1\over3} \times 1{1\over4}}$$
b.
$${5{2\over5} \times 3{4\over9}}$$
Problem 2
Which strategy was more efficient for each problem above? Explain.


aligns: no