Polyhedron

Pyramids

Polyhedron for which one face is any sort of polygonal region(base) and all other faces are triangular regions with one "corner"or vertex in common (apex)

oblique prism

a prism with lateral edges that are not perpendicular to the bases

regular pyramid

a pyramid whose base is a regular polygon and whose lateral faces are congruent isosceles triangles

right prism

each lateral edge is perpendicular to both bases

hemisphere

half of a sphere

platonic solids

A convex polyhedron in which the faces are congruent, regular polygons and the # of edgesthat meet at each vertex are the same.

polyhedron (polyhedra)

Closed surface made entirely of polygonal regionals (hendron is the Greek word for face)

right cone

Come with the apex is centered directly above The Center of the base

icosahedron

20 triangles

tetrahedron

4 triangles

cube

6 squares

octahedron

8 triangles

sphere

A 3 D object where all of the points of the object are a fixed difference from a fixed point, called The Center.

Non-Polyhedron

A 3d figure that is not a polyhedron

dodecahedron

12 triangles

right pyramid

A pyramid that has its vertex aligned directly above the center of its base.

oblique pyramid

A pyramid with an apex that is not aligned above the center of the base.

Cylinders

A simple closed surface that is bounded by two congruent simple closed curves that lie in parallel planes.

Cones

A simple closed surface whose base is a simple closed curve and whos lateral surface slopes to the apex

Prisms

A solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms

oblique cone

a cone that is not a right cone

oblique cylinder

a cylinder that is not a right cylinder

right cylinder

a cylinder where the segment joining the centers of the bases is perpendicular to the bases