2.1: Geometry and Measurement
2.1.1: Points, Lines, and Planes in Space
2.1.2: Applications on the Pythagorean Theorem
2.1.3: The Pythagorean Theorem in 3D
2.1.4: Surface Areas of Pyramids
2.1.5: Surface Areas of Cones
2.1.6: Volumes of Pyramids
2.1.7: Volumes of Cones
2.1.8: Equation of a Circle