The answer would be H. All you have to do for a problem like this in the future are to add the 3 different angles together and make sure they equal 180 degrees.
D would be the answer.Since you are adding the sum first hence the parentheses.
Answer:
Number of sides of the polygon
Step-by-step explanation:
The formula
is the sum of the measures of interior angles. So that's what S stands for. The only other variable remaining is n which is the number of sides of the polygon.
There's nothing I can do to help you understand this, you just have to memorize it.