50 POINTS PLEASE WILL MARK BRAINLIEST

Q11 - 12 sidesQ12 - 10 sides

Step-by-step explanation:

Use the formula for sum of interior angles of a regular polygon:

S = 180(n - 2)

Each angle A measures:

S/n = 180(n - 2)/nA = 180(n - 2)nAn = 180n - 360(180 - A)n = 360n = 360/(180 - A)Question 11

Each angle is 150, then finding n:

n = 360/(180 - 150)n = 360/30n = 12Question 12

Each angle is 144, find n:

n = 360/(180 - 144)n = 360/36n = 10

What am i doing here. add?