allerySides of a regular polygon? I: Each interior angle is 140 degrees. II: Exterior angles total 360.
AII alone suffices
BBoth together needed
CNeither, even together
DI alone suffices
Answer & Solution
Correct answer: D. I alone suffices
An interior angle of 140 means an exterior angle of 40, so 360 divided by 40 gives 9 sides.
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