8: Geometry Last updated Jan 31, 2020 Save as PDF 7.6: Solving Equations 8.1: Angle Measurement Page ID35447 ( \newcommand{\kernel}{\mathrm{null}\,}\) 8.1: Angle Measurement8.2: Perimeter of Polygons and Area of Quadrilaterals8.3: Polygons8.4: Triangles and Quadrilaterals8.5: Triangles, Regular Hexagons, and Irregular Polygons8.6: Polygons8.7: Platonic Solids8.8: Painted Cubes8.9: Geometry Formulas