Convex polygon
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A convex polygon is a polygon whose interior forms a convex set. That is, if any 2 points on the perimeter of the polygon are connected by a line segment, no point on that segment will be outside the polygon.
All internal angles of a convex polygon are less than 
.
These internal angles sum to 180(n-1) degrees.
The comvex hull of a set of points also turns out to be the convex polygon with some or all of the points as its vertices.
See also
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