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consider the coordinates  a(−7,3),b(−4,6),c(5,−3),d(2,−6)a(−7 ,3),b(−4,6),c(5,−3),d(2,−6). 
a. determine using distance formula and slope whether it is a square, a rectangle, or a parallelogram. explain how you know.
b. find the perimeter of the quadrilateral.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?