THE BUILDING BLOCKS OF GEOMETRY

Points, Lines, and Planes

geology.com/.../spiral-galaxy.jpg

The Spiral Galaxy in the constellation Andromeda

Just as a galaxy is made up of stars, a geometric figure is made up of points. Geometric figures such as points, lines, and planes can be used to make

mathematical models of physical objects. The models can be used to solve real world problems.

PointsPoints: When you look at the night sky and see the

stars, the tiny dots of light look like points. Points are often shown as dots, but unlike physical dots,

geometric dots have no size. Points are named by capital letters.

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LinesLines: A geometric line has no thickness, is perfectly straight, and extends forever. A line can be named by two points on the line, a double –headed arrow

over the two letters, or by a single lowercase letter.

PlanesPlanes: A geometric plane extends

indefinitely in all directions along a flat surface. You can think of any flat surface, such as a table top or the front of a book,

as representing a portion of a plane. Planes are named by three capital letters

or one large cursive letter.

Zodiac Signs

Find your Zodiac Sign and make a poster showing the points and line that make up the sign in the stars.

Be creative and make sure your name is in the

design.

Everyday Geometry: Points and Lines make Zodiac Signs and

other Cool Stuff.

We are going to begin a project to see who can find the most geometric symbols in everyday life. It is up to you and your group to decide where you will look and how you will find them.

You can choose a subject you are interested in: sports, cars, fashion, music, anything you would like to research.

Take pictures of everyday objects in that area and present them in a technology project showing the geometric form.