Question

A polygon has the following coordinates: A(6,-7), B(1,-7), C(1,-4), D(3,-2), E(7,-2), F(7,-4). Find the length of DE.

Answer 1

Explanation:

`d=√((x_2-x_1)^2+(y_2-y_1)^2)`

Sub in D(3, -2), E(7, -2) to get:

`DE=√((7-3)^2+(-2-(-2))^2)`

`=√(4^2+0^2)`

`=4`

Answer 2

The length is 7-3 so 4