Engage your students with this tactile match activity, where students sort angles into four categories: acute, right, obtuse and straight. You get a printable PDF that students can cut and paste, and an interactive digital google slides version, where students will drag and drop the angle into the correct category. You can assign the google slides as a center or independent work and have ZERO prep! Or, use the PDF as a minimal prep, super engaging activity for independent math time, centers, sub