Unit 1, Lesson 10# Composing Figures

Open Up Resources 50 min(s)

In this lesson, students create composite shapes using translations, rotations, and reflections of polygons and continue to observe that the side lengths and angle measures do not change. Understand that lengths and angle measures are preserved under any rigid transformation. Let's use reasoning about rigid transformations to find measurements without measuring. Learning targets: students can find missing side lengths or angle measures using properties of rigid transformations.