Squares+P5


 * *A square is a parallelogram with 4 congruent sides and 4 right angles. **


 * *A quadrilateral is a square if and only if it is a rhombus and rectangle. **


 * *The perimeter is 4x the length of one side. **


 * *Angles of a square add up to be 360 degrees **


 * *Has the properties of a parallelogram, a rhombus, and a rectangle. **
 * *The diagonals of a square create a 90 degree angle when they cross, therefore, they are perpendicular. **
 * * To find the length of a diagonal of a square you multiply the length of one side by the square root of two. **
 * length of diagonal = x **[[image:http://www.coolmath.com/reference/images/square5.gif width="34" height="32" caption="square root of 2"]]

Help from other sites
coolmath

Video on Square Properties
This video also has information about rectangles, which is helpful, but for squares, skip to 1:03.

Square Video from Brightstorm

[[image:geometrych8-2012/fgbnjh.png width="879" height="432"]]
How do you find the diagonal of a square?



Find a, b, c, d and w, x, y, and z
Answers to questions: The other side lengths are 34. The angle measure for every square is 90 degrees. You find the diagonal of a square by multiplying the length of one side by the square root of two. a, b, and c = 7 d= 10 w, x, y, and z = 90 degrees

Squares in Real Life

Bathroom tiles have to fit together perfectly.

The square hole has to be a perfect so the square block fits.

Four Square courts have to be even squares in order for the game to be fair.

Fabric squares have to be perfect squares so the quilt is even.

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