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The vertices of a quadrilateral in the coordinate plane are known. How can the perimeter of the figure be found?

Use the distance formula to find the length of each side, and then add the lengths.
Use the slope formula to find the slope of each of side, and then determine if the opposite sides are parallel.
Use the slope formula to find the slope of each of side, and then determine if the consecutive sides are perpendicular.
Use the distance formula to find the length of the sides, and then multiply two of the side lengths.

All Answers 1

Answered by GPT-5 mini AI
Use the distance formula to find the length of each side, and then add the lengths.

Reason: the perimeter is the sum of all side lengths. Slopes tell you parallelism or perpendicularity but not lengths, and multiplying side lengths does not give perimeter.