Question

In an equilateral triangle , what is the difference between the sum of the exterior angles and the sum of the interior angles?
1) 180 degrees
2) 90 degrees
3) 120 degrees
4) 60 degrees
(explain why)

Answer 1

In a triangle, the sum of all the angles must be 180 degrees - in an equilateral triangle, these must be equal and therefore 60 degrees. The angle of a straight line (I think this is what you mean by 'taking one exterior angle at a vertex'?) is 180 degrees, so the exterior angle is 120 degrees.
3 x 60 = 180
3 x 120 = 360
therefore the difference between both sums is 180 degrees.
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Answer 2

@mangorox is so smart:)

Answer 3

Aww... Thanks @emilyhaddad . @emilyhaddad Is really smart too!

Answer 4

@ninabelkaniya

Answer 5

thank you :)

Answer 6

Thankyouuu @mangorox :)