Answer:
19 sides
Step-by-step explanation:
Sum of angles of n-side polygon = 180 *(n - 2)
180 *(n -2) = 3060
Divide both sides by 180
n- 2 = 3060/180
n - 2 = 17
n = 17+2
n = 19
198 is your answer:
65+66+67 = 198
Hope I helped! You can pick me as brainliest if you want to.
Answer:
You are a teacher can't you answer it your self
M will equal -10 because -10 times -5 equals 2
