Question

2) All the angles of a 20 sided polygon are equal.
a) Calculate one outer angle.
b) Calculate one inner angle.
c) Write the sum of all inner angles.​

Answer 1

Answer:

a) 40°

b)140°

c) 1260°

 

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Step-by-step explanation:

each interior angle = n-2 * 180/n= 9-2*180/9 =7*20=140

each exterior angle = 180- 140 (linear pair) = 40

sum of interior angle = n-2 *180=9-2*180 =7*180= 1260°

ok, this is your answer