Kyle Bach

Geometry in the Real WorldBlock 1

Mrs.Sykes12-11-09

A zero-dimensional figure. A geometric element that has position

but no extension

Point

Line

A two-dimensional object that has no endpoints and continues on forever in a plane; formed of infinite points

Plane

A two-dimensional group of points that goes on infinitely in all directions; made up of infinite lines

Angle

the union of 2 rays that have the same endpoint

Perpendicular

2 segments, rays, or lines that form a 90 degree angle

Parallel

Two or more coplanar lines that have no points in common

Triangle

A polygon with three sides

Right Triangle

A triangle that has a 90 degree angle

Pentagon

A five-sided polygon

Hexagon

A six-sided polygon

Square

An equilateral and equiangular quadrilateral

Rectangle

A quadrilateral whose angles are all right angles

Trapezoid

A quadrilateral that has at least one pair of parallel sides

Parallelogram

A quadrilateral with both pairs of opposite sides parallel.

Circle

The set of points on a plane at a certain distance from a certain point (center); a polygon with infinite sides

Cylinder

The surface of a cylindrical solid whose base is a circle

Sphere

The set of points in space equidistant from a certain point

Square Pyramid

The surface of a conic solid whose base is a square

Cube

A hexahedron with six equal squares as faces

Polyhedron

A solid figure bounded by plane polygons or faces