Cool math .com - The Properties of a Kite (perimeter, area, interior angles, diagonals, lengths of sides)

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The Properties of a Kite
Definitions and formulas for the perimeter of a kite, the area of a kite, properties of the sides and angles of a kite
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perimeter of a kite	area of a kite	properties of the sides and angles of a kite
properties of the diagonals of a kite

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The perimeter of a kite:

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

perimeter of a kite = a+a+b+b = 2a+2b

The area of a kite:

To find the area of a kite, multiply the lengths of the two diagonals and divide by 2 (same as multiplying by 1/2):

Area of kite = (1/2)ab

The sides and angles of a kite:

kite

There are two sets of adjacent sides (next to each other) that are the same length (congruent.)

There is one set of congruent angles. These are opposite of each other and are between sides that are different lengths.

On this one, it's kind of hard to put this stuff into words that aren't confusing... So, look at the picture!

Properties of the diagonals of a kite:
	The intersection of the diagonals of a kite form 90 degree (right) angles. This means that they are perpendicular. The longer diagonal of a kite bisects the shorter one. This means that the longer diagonal cuts the shorter one in half.