Answer:
Largest Face: 90 degree angle
Step-by-step explanation:
The answer is 135 degrees as 45 add 135 equals 180 degrees as it's a straight line

get rid of -2 by subtracting it from 21

Now you get your answer

Hope this helps! :)
Step-by-step explanation:
points (-7,5) and (5,-3)?
This would mean to subtract the y coordinates:
5 - (-3) = 8
Then subtract the x coordinates in the same order:
-7 - 5 = -12
Then divide the y result by the x result for the slope:
8/-12 is the slope.
In simplest form, this is equivalent to -2/3