This is a rectangle... Did you draw the points?
Find
- the length of the segment going from (-5,0) to (0,-5)
- and the length of the segment from (-20,-15) to (-15,-20).
These are the length and width of the rectangle; multiply both quantities.
The width is found with the formula:

The length is
You have to do 1= -4+x divided by 2 and then 5= 2+y divided by 2... this is how you find the missing coordinate since your given the other coordinate and the midpoint... I am learning the same thing in geometry right now ahah glad I can help
the geometric mean is 20
the geometric mean of 2 numbers a and b is 
=
= 20
Answer:
Step-by-step explanation: