https://www.khanacademy.org/kmap/geometry-229-231lp/x7908631a3e59edd7:geometry9 2026-06-26T16:10:41.915992454Z Geometry 229-231 In this topic, we will learn about special angles, such as angles between intersecting lines and triangle angles. Next, we will learn about the Pythagorean theorem. We will find volume of 3D shapes like spheres, cones, and cylinders. Finally, we will learn about translations, rotations, reflections, and congruence and similarity. unit