Find the perimeter of a quadrilateral with vertices at C (−2, 1), D (2, 4), E (5, 0), and F (1, −3). Round your answer to the nearest hundredth when necessary.

Question

mathmate · Answer

@yese30 
1. graph the quadrilateral to make sure it should be named in order (e.g. CDEF).
If not named correct, you may be calculating the diagonals instead of to of the sides.
2. Are you familiar with the distance formula between two points P1(x1,y1) and P2(x2,y2)?
$\large distance=\sqrt{(x2-x1)^2+(y2-y1)^2}$ 
Use this formula to calculate the side length of each side, and calculate the total of the side lengths.

yese30 · Answer

x1=y1 square rooted?