8.1: Vocabulary Self-Rating Difficulty Level: At Grade Created by: CK-12 Share Add to Library Turn In Read Resources Details Rating Guide: DK: I am sure I don’t know it K: I am sure I know it ?: I’m not sure Word Before Lesson/Unit After Lesson/Unit Circle Center Radius Interior Diameter Circumference Perimeter Inscribe Pi ( π ) Area Central angle Arc Semicircle Minor arc Major arc Chord Secant Degree measure of an arc Linear measure of an arc Arc length Sector Cylinder Right cylinder Surface area Lateral area Volume Cone Right circular cone Apex Altitude Sphere Hemisphere Tangent Notes/Highlights Having trouble? Report an issue. Color Highlighted Text Notes Show More Image Attributions Show Hide Details Description No description available here... Authors: CK12 Editor Tags: cones cylinders spheres (2 more) surface area volume Concept Nodes: MAT.GEO.854 (Surface Area and Volume of Cylinders) MAT.GEO.858 (Surface Area and Volume of Cones) MAT.GEO.870 (Spheres) Grades: 8 , 9 , 10 Date Created: Feb 23, 2012 Last Modified: May 12, 2014 Save or share your relevant files like activites, homework and worksheet.To add resources, you must be the owner of the section. Click Customize to make your own copy.