Cube is a 3-dimensional shape with six square or rectangular sides. A typical example will be a dice.
Cuboid is a box-shaped 3-dimensional object. It has six flat faces and all angles are right angles. Cuboid is also called regular prism.
Cone is a shape whose base is a circle and whose sides taper up to a point. A familiar example will be an ice-cream cone.
Cylinder is a 3-dimensional figure that has 2 congruent circular faces.
Prism is a polyhedron with two congruent and parallel faces as the bases and parallelograms as lateral faces.
Pyramid is a 3-dimensional figure with a polygon base and triangular sides, and the triangular sides meet at a single point at the top.
Sphere is a 3-dimensional object whose surface is the same distance from its center at all points. An eample is our Earth.
Polyhedron is a 3-dimensional figure whose surfaces are polygons.
Vertex refers to the highest point of a 3-d object. For example, the vertex of a pyramid.
Face refers to the surface of a 3-dimensional object.
Edge refers to a sharp side formed by the intersection of two surfaces of a 3-dimensional object.
Apothem is a line drawn from the center of a regular polygon that is perpendicular to one of the polygon's sides.
Cross section is the intersection of a 3-dimensional object with a plane. When you cut a 3-dimensional object into slices, you are basically creating many parallel cross sections.
Net is a pattern that you can cut and fold to make a model of a solid shape. For example, the figure below is the net for a dice.
