The Properties of a Square

Definitions and formulas for the perimeter of a square, the area of a square,  how to find the length of the diagonal of a square, properties of the diagonals of a square
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perimeter of a square area of a square sides and angles
of a square
diagonal of a square central angle of a square facts about squares

 

The perimeter of a square:

To find the perimeter of a square, just add up all the lengths of the sides:

Perimeter = x+x+x+x = 4x

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The area of a square:
To find the area of a square, multiply the lengths of two sides together...  Another way to say this is to say "square the length of a side!"  Get it?  Square!

Area = x*x  = x^2

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The sides and angles of a square:

square

The sides of a square are all congruent (the same length.)

The angles of a square are all congruent (the same size and measure.)

Remember that a 90 degree angle is  called a "right angle."  So, a square has four right angles.

Opposite angles of a square are congruent.
Opposite sides of a square are congruent.
Opposite sides of a square are parallel.

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