2 Student Expectations 7th Grade: 7.3.6C Use properties to classify three-dimensional figures, including pyramids, cones, prisms, and cylinders.
3 Three DimensionsSolid Geometry is the geometry of three-dimensional spaceIt is called three-dimensional, or 3D because there are three dimensions: width, depth and height.
4 Polyhedron A geometric object with flat faces and straight edges. a polyhedron is a three - dimensional figure made up of sides called faces, each face being a polygon.
5 BaseThe lowest part. The surface that a solid object stands on, or the bottom line of a shape such as a triangle or rectangle.
6 Prism A solid object that has two identical ends and all flat sides. The cross section is the same all along its length.The shape of the ends give the prism a name, such as "triangular prism“It is a polyhedron.
7 PyramidA solid object where: * The base is a polygon (a straight-sided shape) * The sides are triangles which meet at the top (the apex). It is a polyhedron.
8 CylinderA cylinder is a solid object with: * two identical flat circular or elliptical ends * and one curved side.
9 ConeA solid(3-dimensional) object that has a circular base and one vertex