Question

Which of the following options are correct? 1) If each angle of a polygon is less than 180∘, it is called convex polygon. 2) If each angle of a polygon is more than 180∘, it is called concave polygon. 3) If at least one angle of a polygon is more than 180∘, it is called concave polygon. 4) If at least one angle of a polygon is less than 180∘, it is called convex polygon.

A
(1) and (4)
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B
(2) and (4)
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C
(3) and (4)
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D
(1) and (3)
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Solution

The correct option is A (1) and (3)If each angle of a polygon is less than 180∘, it is called convex polygon. If at least one angle of a polygon is more than 180∘, it is called concave polygon. So, (1) and (3) are correct.

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