Question

define convex and concave polygon​

Answer 1

 convex polygon is defined as apolygon with all its interior angles less than 180°. This means that all the vertices of the polygon will point outwards, away from the interior of the shape. ... Note that a triangle (3-gon) is always convex. A convex polygon is the opposite of a concave polygon. See Concave Polygon.

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Answer 2

A convex polygon is defined as a polygon with all its interior angles less than 180°. This means that all the vertices of the polygon will point outwards, away from the interior of the shape. ... Note that a triangle (3-gon) is always convex. A convex polygon is the opposite of a concave polygon.


A simple polygon that is not convex is called concave, non-convex or reentrant. A concave polygon will always have at least one reflex interior angle—that is, an angle with a measure that is between 180 degrees and 360 degrees exclusive. 

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