 ## CCSS.MATH.CONTENT.7.G.A.3: Describe the two-dimensional figures that result from slicing three-dimensional figures, as in plane sections of right rectangular prisms and right rectangular pyramids.

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### VIDEO: 3D Geometry Animation: Antiprism This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Antiprism Folding Out into Two Pyramids This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Cone This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Cube This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### 3D Geometry Animation: Cylinder This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Octahedron This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Pyramid This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Rectangular Prism This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Tetrahedron This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### VIDEO: 3D Geometry Animation: Triangular Prism This is part of a series of video animations of three-dimensional figures. These animations show different views of these figures: top, side, and bottom. Many of these figures are a standard part of the geometry curriculum and being able to recognize them is important. ### Definition--3D Geometry Concepts--Cross-sections of a Cube This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Cross-Sections of a Sphere This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Horizontal Cross-Sections of a Cone This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Horizontal Cross-Sections of a Cylinder This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Horizontal Cross-Sections of a Square Pyramid This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Horizontal Cross-Sections of a Triangular Prism This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Vertical Cross-Sections of a Cone This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Vertical Cross-Sections of a Cylinder This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Vertical Cross-Sections of a Square Pyramid This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--3D Geometry Concepts--Vertical Cross-Sections of a Triangular Prism This is a collection of definitions related to 3D figures and their properties. This includes definitions and examples of 2D nets of 3D figures, as well as 2D cross-sections of different 3D figures. ### Definition--Circle Concepts--Circular Cross-Sections This is a collection of definitions related to circles and related topics. This includes general definitions for parts of a circle, constructions involving circles, and other topics. ### Definition--Geometry Basics--Pyramid This collection of clip art images includes image sequences for key topics in geometry. This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic. ### Google Earth Voyager Story: The Mathematics of Pyramids, Part 1 In this Google Earth Voyager story visit pyramids around the world and learn about the geometry of pyramids. In this lesson, visit the pyramids of Giza and learn about the properties of pyramids. In particular, see the derivation of the formula for the volume of a pyramid. ### Google Earth Voyager Story: The Mathematics of Pyramids, Part 2 In this Google Earth Voyager story visit pyramids around the world and learn about the geometry of pyramids. ### Math Clip Art--Net for a Cube This is part of a collection of math clip art images that show two-dimensional nets for 3D objects. 