What is the sum of all angles

Question:

What is the sum of all angles of a hexagon?

(a) 180°

(b) 360°

(c) 540°

(d) 720°

Solution:

(d) Sum of all angles of a n-gon is (n – 2) x 180°.

In hexagon, n = 6, therefore the required sum = (6 – 2) x 180° = 4 x 180° = 720°

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