Polyhedron

Net

A 2D pattern that can be folded into a 3D figure.

Prime Meridian

A line of longitude @ which longitude is defined to be 0 degrees.

Altitude of a prism

A perpendicular segment that joins the planes of the bases.

Cube

A polyhedrom with six faces, each of which is a square.

pyramid

A polyhedron in which the base can be any polygon and the other faces are triangles that meet @ a common vertex.

prism

A polyhedron with exactly two congruent, parallel bases. Other faces are called Lateral faces.

Right Prism

A prism with bases aligned one directly above the other and has lateral faces that are rectangles.

oblique

A prism with bases that are not aligned one directly above the other.

cone

A pyramid with a circular base.

Regular Polyhedra

All faces are congruent regular polygons.

International Date Line -

An imaginary line on the surface of the Earth that runs from the North to South poles and demarcates one calendar day from the next.

Slant Height

Length of the altitude of the lateral face of the pyramid.

Hemispheres -

Portions of spheres created by great circles.

Regular Pyramid

Regular polygon base w/ congruent isosceles triangles.

isometric drawing

Shows 3 sides of the figure from a corner view.

Orthographic Drawing

Shows a top, front, and right-side view.

Foundation Drawing

Shows the base of a structure and the height of each part.

Surface Area of a prism

Sum of the lateral area and the area of the two bases.

cross section

The intersection of a solid and a plane.

Height of a prism

The length of an altitude.

Altitude of a Pyramid

The perpendicular segment from the vertex to the base plane.

Lateral Area of a Prism

The sum of the areas of the lateral faces.

vertex

a point where three or more edges intersect.

edge

a segment that is formed by the intersection of two faces

cylinder

a space figure with two congruent and parallel cicular bases.

Polyhedron

a three dimensional figure whose surfaces are polygons

Great Circle

he center of the circle intersecting the sphere is the center of the sphere.

Sphere -

he set of all points in space equidistant from a given point called the center.

Surface Area

he sum of the lateral area and the area of the two bases.

Face

polygon on polyhedra