Answers

2014-08-08T06:56:33+08:00
The sum of all angles is 180
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2014-08-08T13:40:58+08:00
You could use the formula, (n-2)180°, where n is the number of sides of a polygon.
Since a triangle has 3 sides, then n=3
(3-2)180°
= (1)180°
= 180°
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