Rectangles
A rectangle is a parallelogram that has four right angles.
A parallelogram has two parallel lines like rectangles, square, and rhombus.
All squares are rectangles, but not all rectangles are squares.
Rectangle Square Parallelogram Rhombus
V V V V
L= Length W= Width P= Perimeter
To find the rectangle's Perimeter you use the formula L x 2 + W x 2 = P
Example:(18ft x 2) + (36ft x 2) = 108ft; L=18ft W=36ft P=108ft
To find the rectangle's area you use the formula L x W= A
2
Example:18ft x 36ft=648ft;L=18ft W=36ft A=648ft
Remember! When you get the area (NOT perimeter) always put
2 squared->2 2 2
squared ( ) at the end. Examples: 3 ,9 ,100
If the rectangle has 84in. in length and 32in. in width, what is the perimeter and area of the
rectangle?
2
If you got 232in. for perimeter and 2,688in for area, you are correct.
(84in. x 2) + (32in. x 2) = 232in. is how you get the perimeter and
2
84in. x 32in. = 2,688in. is how you get the area.
Informational Websites:
http://standards.nctm.org/document/eexamples/chap5/5.3/index.htm
http://www.webmath.com/geo_rectangle.html
http://www.webmath.com/k8rectangle.html
http://www.mste.uiuc.edu/users/carvell/rectperim/RectPerim2.html
http://www.321know.com/geo78_x3.htm
http://www.math.okstate.edu/~geoset/Projects/Ideas/SquareRect.htm
More coming soon............
Comments (16)
Anonymous said
at 2:40 pm on Oct 24, 2007
^o^
Anonymous said
at 6:02 pm on Oct 25, 2007
Wow, you can email and chat with yourself if you click on your own name.
Anonymous said
at 6:39 pm on Oct 28, 2007
HA HA
thanks 4 the tip!
Anonymous said
at 5:37 pm on Oct 31, 2007
wats a paranormallallellogrammm?....
Anonymous said
at 3:41 pm on Nov 1, 2007
a parallelogram has two parallel lines that never meet.
Anonymous said
at 4:14 pm on Nov 1, 2007
hmmmmmmm...interesting...
Anonymous said
at 4:15 pm on Nov 1, 2007
wats with the "squared" thing next to ur example thing
Anonymous said
at 5:16 pm on Nov 1, 2007
pointing at the exponent
Anonymous said
at 6:04 pm on Nov 1, 2007
thankss i didn't catch that.
nice pagee :)
Anonymous said
at 1:21 pm on Nov 5, 2007
You might want to double space the beggining but good work:)
Anonymous said
at 1:24 pm on Nov 5, 2007
u are going to put more info right? it looks great!
Anonymous said
at 1:25 pm on Nov 5, 2007
double space it hard to read
Anonymous said
at 1:33 pm on Nov 5, 2007
the title is allllll the way down the middle of the page...u should center and pull up the title
Anonymous said
at 2:35 pm on Nov 5, 2007
good work it looks great
Anonymous said
at 7:00 pm on Nov 6, 2007
i wonder when "more is coming soon" is going to be...hmmmm any way nice page and co000ol pics
Anonymous said
at 10:36 pm on Nov 21, 2007
This seems unfinished. I would like you to work on making it clearer and easier to read. Think about grouping and organizing the things you want to say.
2.5 of 4
8 of 12 total project points
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