Classifying Solids 12.1

What is this Solid?

Rectangular Prism

What is this Solid?

Triangular Pyramid

What is this Solid?

Cylinder

What is this solid?

Cone

Solids are three- dimensional objects/shapes (height, length and width) that enclose a part of space

Prisms, Pyramids, Cones, Cylinders, and Spheres, are all Solids

A Polyhedron is a three dimensional figure whose faces are polygons. Prisms and pyramids are polyhedrons

Prism is a solid formed by polygons which are connected at the edges ; they have two congruent bases that are on parallel planes; they are named by the shapes of the polygons which make up their bases

Pyramid is a solid formed by polygons connected at the edges; the base can be any polygon and the remainder of the faces are triangles; they are named by the shape of their base

Cylinder is a solid with two circular bases that are on parallel planes

Cone is a solid with one circular base

Sphere is a solid formed by points in space that are the same distance (equi- distant) from a point in the center (a ball)

Base is a plane figure. If the solid is a cylinder or prism, there are two bases which are shapes that are parallel and congruent

Face is a polygon which makes up the surface of the three dimensional solid.

Edge is the line segments where the polygons meet.

Vertex is the point where three faces meet; the point where three edges meet

Skew lines are lines that do not intersect and are not parallel