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. Show or explain your work.
a.      ________ = 32,010 – 2,546
b.   829,403 = 175,368 + _____________
Problem 2
A company plans to give free stickers to 100,000 customers. On the first day of the giveaway, they give free stickers to 6,512 customers. How many stickers do they still have to give away? Show or explain your work.


aligns: no