REAL WORLD GEOMETRY

Jasmon Haggerty

2nd Block

POINT An undefined

term in geometry, it names a location and has no size

LINE (SEGMENT) A line with two

endpoints

PLANE It is a flat

surface that has no thickness and extends forever.

ANGLE A figure formed

by two rays with a common endpoint.

PERPENDICULAR LINES Lines that

intersect at 90° angles.

PARALLEL LINES Lines in the

same plane that do not intersect.

TRIANGLE A three-sided

ploygon

RIGHT TRIANGLE A triangle with

one right angle

PENTAGON A five sided

polygon

HEXAGON A six-sided

polygon

(a soccer net)

SQUARE A quadrilateral

with four congruent sides and four right angles

RECTANGLE A quadrilateral

with four right angles

TRAPEZOID A quadrilateral

with exactly one pair of parallel sides

(Trapezoid box)

PARALLELOGRAM A quadrilateral

with two pairs of parallel sides.

A part of a door

CIRCLE The set of all

points in a plane that are fixed distance from a given point called a center of a circle.

A button

CYLINDER A three-

dimensional figure with two parallel congruent circular bases and a curved later surface that connects the bases.

SPHERE The set of points

in space that are a fixed distance from a given point called the center of the sphere.

CONE A three-

dimensional figure with a circular base and a curved lateral surface that connects the base to a point called the vertex.

CUBE A prism with six

square faces.

PYRAMID A polyhedron

formed by a polygonal base and triangular lateral faces that meet at a common vertex.