Question

prove that the sum of the interior angles of an octagon is twice the sum of the interior angle of a Pentagon ​

Answer 1

Step-by-step explanation:

Prove that the sum of the interior angle of an octagon is twice the sum of the ... For pentagon, = (5-2)×180. For octagon, = (8-2)× 180. Ratio of sum of int angles= (8-2)×180 / (5-2 ...

Answer 2

Answer:

Sum lf interior angle of any regular polygon can be given by

where n is the no. of sides of polygon

for pentagon

n = 5

so sum of all interior angles is

180[5-2]

180(3)

540°

and for octagon

n = 8

so sum of interior angles is

180(8-2)

180(6)

1080° = 2(540)

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