The sum of all angles in a rigging triangle is how many degrees?

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Multiple Choice

The sum of all angles in a rigging triangle is how many degrees?

Explanation:
In a triangle, the interior angles always add up to 180 degrees. This holds for a rigging triangle just as it does for any triangle. A handy way to see why is to extend one side and draw a line parallel to that side through the opposite vertex; the angles at the other two vertices line up with the third angle to form a straight line, totaling 180 degrees. Another way to look at it is the general polygon formula (n−2)×180; with n = 3 you get 180. So the sum of all angles in a rigging triangle is 180 degrees. The other numbers are not the total for a triangle’s interior angles.

In a triangle, the interior angles always add up to 180 degrees. This holds for a rigging triangle just as it does for any triangle. A handy way to see why is to extend one side and draw a line parallel to that side through the opposite vertex; the angles at the other two vertices line up with the third angle to form a straight line, totaling 180 degrees. Another way to look at it is the general polygon formula (n−2)×180; with n = 3 you get 180. So the sum of all angles in a rigging triangle is 180 degrees. The other numbers are not the total for a triangle’s interior angles.

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