This document provides definitions and key concepts for basic geometry shapes including:
- Points, lines, line segments, rays, intersecting and parallel lines
- Types of triangles like acute, obtuse, right, isosceles, scalene
- Properties of triangles including internal angles, vertices, and angle relationships
- Types of quadrilaterals such as trapezoids, parallelograms, rectangles, rhombuses, and squares
- Formulas for calculating the areas of rectangles, squares, trapezoids, parallelograms
- Circle elements such as chords, diameters, radii, circumference, arcs, and area