SOLUTION: Find the perimeter of a quadrilateral with vertices at C (−1, 2), D (−2, −1), E (2, −2), and F (1, 1). Round your answer to the nearest hundredth when neces

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Question 983842: Find the perimeter of a quadrilateral with vertices at C (−1, 2), D (−2, −1), E (2, −2), and F (1, 1). Round your answer to the nearest hundredth when necessary.
Found 2 solutions by MathLover1, Alan3354:
Answer by MathLover1(20849)   (Show Source): You can put this solution on YOUR website!
given:
C (, ),
D (, ),
E (, ), and
F (, )
use the distance formula, then add all of the distances
the distance between points
C (, ) and D (, ) is

Solved by pluggable solver: Distance Formula to determine length on coordinate plane
The distance (d) between two points is given by the following formula:



Thus in our case, the required distance is



For more on this concept, refer to Distance formula.




the distance between points
E (, ), and F (, )is
Solved by pluggable solver: Distance Formula to determine length on coordinate plane
The distance (d) between two points is given by the following formula:



Thus in our case, the required distance is



For more on this concept, refer to Distance formula.




the distance between points
C (, ) and E (, ) is
Solved by pluggable solver: Distance Formula to determine length on coordinate plane
The distance (d) between two points is given by the following formula:



Thus in our case, the required distance is



For more on this concept, refer to Distance formula.



the distance between points
D (, ) and F (, ) is

Solved by pluggable solver: Distance Formula to determine length on coordinate plane
The distance (d) between two points is given by the following formula:



Thus in our case, the required distance is



For more on this concept, refer to Distance formula.




so,
units



then,




Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Find the lengths of the 4 sides.
CD, DE, EF and FC
------
Sum =~ 12.68 units
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