Question

find the sum of angle 1,2,3,4,5,6,7 ,8,9 in the adjoining figure
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Answer 1

Answer:

we know that this is a pentagon and the sum of the pentagon is 450.

therefore the sum of angle 1,2,3,4,5,6,7,8,9 is 450

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Answer 2

Answer:

540

Step-by-step explanation:

We can find there are three triangles

so, sum of all angle = 3* 180 (since 18 is the sum of all angle of a triangle)

= 540