6.1: 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 Perimeter Circumference Area Base Height Altitude Trapezoid Rhombus Kite Diagonal Polygon Regular Apothem Interior Angles Triangle Sum Theorem Vertex Exterior Angles Vertical Angles Linear Pair Supplementary 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 area kites (8 more) parallelograms polygons Quadrilaterals Rectangles rhombuses Squares trapezoids triangles Concept Nodes: MAT (Mathematics) 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.