This Problem Set is a part of the Lesson 1, Unit 7, Grade 7. In this lesson, students gain hands-on experience composing, decomposing, and measuring angles. Add and subtract angles that form 360 degree, straight and right angles. Prepare one set of pattern blocks for each group of 3-4 students, include blocks consisting of at least 3 yellow hexagons and 6 of each of the other shapes.