Examples Examples

Find the perimeter of the triangle with the following points:

(3, 3), (3, 6), (4, 6)
To find the lengths of each leg, the distance formula must be used.
The distance formula is ( (x2 - x1)2 + (y2 - y1)2)1/2
( (3-3)2 + (6-3)2)1/2
( 0 + 32)1/2
( 9 )1/2
3


( (4-3)2 + (6-3)2)1/2
( 1 + 32)1/2
( 10 )1/2


( (4-3)2 + (6-6)2)1/2
( 1 + 0)1/2
( 1 )1/2
1


The perimeter can be found by adding the three lengths together.
3 + 1 + (10)1/2
4 + (10)1/2
The perimeter of the triangle is 4 + (10)1/2.
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