11 1 Solid Geometry Threedimensional figures or solids

11 -1 Solid Geometry Three-dimensional figures, or solids, can be made up of flat or curved surfaces. Each flat surface is called a face. An edge is the segment that is the intersection of two faces. A vertex is the point that is the intersection of three or more faces. Holt Mc. Dougal Geometry

11 -1 Solid Geometry Holt Mc. Dougal Geometry

11 -1 Solid Geometry A cube is a prism with six square faces. Other prisms and pyramids are named for the shape of their bases. Holt Mc. Dougal Geometry

11 -1 Solid Geometry A Net is a 2 D representation of a 3 D solid. Imagine “unfolding” the solid so you can see all surfaces! Holt Mc. Dougal Geometry

11 -1 Solid Geometry A Cross section is the 2 D shape describing the surface when a solid is cut into Holt Mc. Dougal Geometry

11 -1 Solid Geometry Holt Mc. Dougal Geometry

11 -1 Solid Geometry Calculate the volume of each solid. Round to the nearest tenth if necessary. H =14 cm H =15 ft Holt Mc. Dougal Geometry

11 -1 Solid Geometry Calculate the volume of each solid. Round to the nearest tenth if necessary. Holt Mc. Dougal Geometry

11 -1 Solid Geometry Without Pictures 1. Find the diameter of a sphere with volume 36, 000 cm 3. 2. Find the surface area of a sphere with diameter 76 cm. Give your answers in terms of . 3. Find the volume of a sphere with surface area 324 in 2. Give your answers in terms of . Holt Mc. Dougal Geometry

11 -1 Solid Geometry Surface Area: calculate the area of the surfaces and add. Make sure you don’t add interior faces of composite figures! Holt Mc. Dougal Geometry