9: Measurement and Geometry Last updated Save as PDF Page ID 48891 Denny Burzynski & Wade Ellis, Jr. College of Southern Nevada via OpenStax CNX 9.1: Measurement and the United States System 9.2: The Metric System of Measurement 9.3: Simplification of Denominate Numbers 9.4: Perimeter and Circumference of Geometric Figures 9.5: Area and Volume of Geometric Figures and Objects 9.6: Summary of Key Concepts 9.7: Exercise Supplement 9.8: Proficiency Exam Thumbnail: A two-dimensional perspective projection of a sphere (CC BY-3.0; Geek3 via Wikipedia ).