1: Area and Surface Area Last updated Mar 27, 2022 Save as PDF Licensing Section 1: Lessons Reasoning to Find Area Page ID35047 Illustrative MathematicsOpenUp Resources ( \newcommand{\kernel}{\mathrm{null}\,}\) Section 1: Lessons Reasoning to Find Area1.1: Tiling the Plane1.2: Finding Area by Decomposing and Rearranging1.3: Reasoning to Find AreaSection 2: Parallelograms2.1: Parallelograms2.2: Bases and Heights of Parallelograms2.3: Area of ParallelogramsSection 3: Triangles3.1: From Parallelograms to Triangles3.2: Area of Triangles3.3: Formula for the Area of a Triangle3.4: Bases and Heights of TrianglesSection 4: Polygons4.1: PolygonsSection 5: Surface Area5.1: Polyhedra5.2: Nets and Surface Area5.3: More Nets, More Surface Area5.4: Distinguishing Between Surface Area and VolumeSection 6: Squares and Cubes6.1: Squares and Cubes6.2: Surface Area of a CubeSection 7: Surface AreaNo image available7.1: What is Surface Area?Section 8: Let’s Put it to Work8.1: Designing a Tent