Remember that perimeter is the sum of the lengths of the sides. The way to find the length of the sides is 
where 
is one endpoint of one line, while 
is the other endpoint of the same line. Repeat this formula for each side and add them all together to get your perimeter
If line a has a slope of -3 and is perpendicular to line b, what would is the slope of line b?
1 answer:
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