compute perimeter of triangle

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compute length of side 1
compute length of side 2
compute length of side 3
add them
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side 1 is from point (x1, y1) to (x2, y2)
	length is
side 2 is from point (x2, y2) to (x3, y3)
	length is
side 3 is from point (x3, y3) to (x1, y1)
	length is


o compute length of side 1:
	squareroot ((x2 - x1) square + (y2 - y1) square)
o compute length of side 2:
	squareroot ((x3 - x2) square + (y3 - y2) square)
o compute length of side 3:
	squareroot ((x3 - x1) square + (y3 - y1) square)

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read in x1
read in y1
read in x2
read in y2
read in x3
read in y3

side1length = sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)
side2length = sqrt((x3 - x2) ** 2 + (y3 - y2) ** 2)
side3length = sqrt((x3 - x1) ** 2 + (y3 - y1) ** 2)

perimeter = side1length + side2length + side3length




y = 1 |
	 |
	 |
	 |
y = 0  -----------
	  x = 0		x = 1