8.1 Practice Day

In this Practice Day, students practice what they’ve learned so far in this unit, with extra attention on topics from the more recent lessons. Students will practice applying the definition of congruence for transformations of polygons on a grid to decide whether or not two figures are congruent.

By Desmos Classroom

Learning goals: Learning Goals • Experiment with two-dimensional figures and decide what it means for them to be congruent. (Lesson 7) • Observe that rigid transformations preserve lengths and angle measures. (Lesson 8) • Decide whether two figures on a grid are congruent by applying transformations. (Lesson 9) • Understand that all corresponding sides in a pair of congruent polygons have the same length. (Lesson 9) Materials • Geometry toolkits