alleryA pentagon is cut into 3 triangles. Its angle sum is how many degrees?
A720
B360
C450
D540
Answer & Solution
Correct answer: D. 540
1. A pentagon can be split into 3 triangles from one corner.
2. Each triangle has angles adding to 180 degrees.
3. 3 x 180 = 540 degrees.
_Source: Wikipedia, Pentagon (CC BY-SA 4.0), Pentagon_
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