## anonymous one year ago What is the perimeter of the polygon with these coordinates: (1,-2) (4,2) (6,2) and (9,-2)?

1. jdoe0001

$$\textit{distance between 2 points}\\ \quad \\ \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) &({\color{red}{ 1}}\quad ,&{\color{blue}{ -2}})\quad % (c,d) &({\color{red}{ 4}}\quad ,&{\color{blue}{ 2}}) \\\hline\\ &({\color{red}{ 4}}\quad ,&{\color{blue}{ 2}})\quad % (c,d) &({\color{red}{ 6}}\quad ,&{\color{blue}{ 2}}) \\\hline\\ &({\color{red}{ 6}}\quad ,&{\color{blue}{ 2}})\quad % (c,d) &({\color{red}{ 9}}\quad ,&{\color{blue}{ -2}}) \\\hline\\ &({\color{red}{ 9}}\quad ,&{\color{blue}{ -2}})\quad % (c,d) &({\color{red}{ 1}}\quad ,&{\color{blue}{ -2}}) \end{array}\qquad % distance value d = \sqrt{({\color{red}{ x_2}}-{\color{red}{ x_1}})^2 + ({\color{blue}{ y_2}}-{\color{blue}{ y_1}})^2}$$ get the distance of each segment, add them up, that'd be the perimeter

2. anonymous

20 units (unless there's a specific unit of measurement you're using)