Question

The inner angle of a regular polygon is 144º.
a) What is the measure of outer angle at a vertex?
b) What is the sum of measures of outer angles ?
c) How many sides does it have ?​

Answer 1

a ) 180 - 144 = 36°

b) 360° [ sum of outer angles will be 360]

c) 360 / n = 36

n = 10