Math and our EnvironmentMath and our Environment

ADJACENT ANGLESADJACENT ANGLES

Angles that are next to each they; they have a Angles that are next to each they; they have a common side but no overlap.common side but no overlap.

ANGLEANGLE

A figure that is formed by two rays or two line A figure that is formed by two rays or two line segments with a common end point.segments with a common end point.

ARCARC

Part of a circle, from one point on the circle to Part of a circle, from one point on the circle to another.another.

ARRAYARRAY

An arrangement of An arrangement of objects in a regular objects in a regular pattern, usually in rows pattern, usually in rows or columns. Arrays can or columns. Arrays can be used to model be used to model multiplication.multiplication.

CIRCLECIRCLE Set of all points in a Set of all points in a

plane that are a given plane that are a given distance from a given distance from a given point in the plane. The point in the plane. The given point is the center given point is the center of the circle.of the circle.

Circumference is the Circumference is the distance around distance around

a circle.a circle.

CONGRUENTCONGRUENT

Having exactly the same shape and size.Having exactly the same shape and size.

ENLARGEENLARGE

To increase the size of an object.To increase the size of an object.

PARALLELPARALLEL

Never meeting and always the same distance apart. Never meeting and always the same distance apart. Lines, line segments, rays in a plane, and planes are Lines, line segments, rays in a plane, and planes are parallel if they never meet.parallel if they never meet.

SEMI-CIRCLESEMI-CIRCLE

An arc whose An arc whose

end points are end points are

the end pointsthe end points

of the diameter of the diameter

of a circle.of a circle.

SYMMETRICSYMMETRIC

Having the same size and shape on either side of a Having the same size and shape on either side of a line or looking the same when turned by some line or looking the same when turned by some amount less than 360 degrees.amount less than 360 degrees.

VANISHING LINEVANISHING LINE

A line connecting a A line connecting a point on a figure in a point on a figure in a perspective drawing perspective drawing with the vanishing with the vanishing point.point.

Math in NatureMath in Nature How many examples can you find in this picture?How many examples can you find in this picture?

Gale SorensenEDST6304Professor J MartinelliFall 2009

Photos taken by Nokia N97

CylinderPlaneAngleParallelLineSurface