9.1: 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 Inscribed angle Intercept Intercepted arc Central angle Corollary Chord Average Mean Vertical angles Linear pair Tangent Point of tangency Proof by contradiction Radius Converse Secant Perpendicular bisector Diameter Equidistant Segment AA Similarity Postulate Inscribed polygon Circumscribed polygon 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: angles arcs chords (6 more) circles circumscribed inscribed secants Segments tangents Concept Nodes: MAT (Mathematics) MAT.GEO.700 (Circles) 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.