GEOMETRY :
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CIRCLES
Vocabulary: CIRCLES (LOTS OF NOTES SCROLL DOWN TO VIEW ALL) Circle The set of all points in a plane that are the same distance from a given point. Center The point that is the same distance from all all the points of a circle. Circumference The distance around a circle. Radius distance from the center to any point on a circle. Diameter The distance across a circle through its center. pi distance half way around the edge of a circle is 3.14159265. Pi is usually wrote as 3.14. The symbol for pi in math is 𝝅 AREA: Finding the area of a circle using radius (r): A= r * r * 3.14 Remember to include unit of measure with answer answer and square it (power of 2). Finding area of a circle using diameter (d): Step One: d ÷ 2= r Step Two: r * r * 3.14 Remember to include unit of measure with answer answer and square it (power of 2). CIRCUMFERENCE: Finding circumference of a circle using radius (r) C= 3.14 * 2 * r Remember to include unit of measure with answer, BUT DO NOT SQUARE IT! FInding Circumference using diameter (d). C= 3.14 * d Remember to include unit of measure with answer, BUT DO NOT SQUARE IT! Finding circumference is using area:


RECTANGLES:
SURFACE AREA OF A RECTANGLE: Front Face & Back Face Left Face & Right Face Top & Bottom 
How to make

LINKS ON HOW TO CONSTRUCT
GEOMETRIC CONTRUCTIONS:  How to construct a 90 degree angle (right angle)  How to construct a 45 degree angle How to contruct parallel lines Math Source List and Resources (A BIG HELP!) 