Notice that all vertices are on either the y-axis or on the x-axis.
B
Practice makes perfect
Let's place the vertices in a coordinate plane. Two of the points, (w,0) and (- w,0) are both on the x-axis since their y-coordinates are 0. Also since w and - w are opposite numbers, they will be equally far away from the origin.
The remaining two points, (0,v) and (0,- v) are both on the y-axis since their x-coordinates are 0. Also because v and - v are opposite numbers, they are equally far away from the origin.
The midpoint we are looking for is on the side with (0,- v) and (- w,0) as endpoints. Using the Midpoint Formula, we can find this point.
