A(-3, -1); B(2, -1), C(2, 3)
You can read the length of AB and BC.
|AB| = 5
|BC| = 4
Use the Pythagorean theorem:
The perimeter:
5.8/ sqrt 80=0.648 I think you are asking for the standard margin
Hope this works
Because in an equilateral triangle all angles should measure 60 degrees otherwise all sides would not be equal.
1/5 (150x - 80y + 50 - 50x - 25y + 20) = 20x - 21y + 14
what I did is combined the like terms and multiplied each term within the parenthesis by .2