This document is designed to be a 10-day set of warm-ups on congruent triangles and similar polygons. There are two sets of five-day warm-ups. For each set the first three sections/days are computational practice. The fourth section/day is a constructed response type question where students are asked to show work and explain how a solution is determined, and the fifth section/day is a set of five multiple-choice questions. The first set is on corresponding parts of similar triangles and determining the measures of corresponding parts and angles. The second set is on proportions and finding the measures of sides of similar polygons. These sets could also be used as a practice or test-prep worksheets.