A convex shape is a shape that is pushing out like a house -> /\ <-
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Food shaped like a polygon
Assuming that the shape is like the cross section of a convex lens, the perimeter is 16.17 units.
i dont think any1 knows * * * * * A concave polygon has at least one reflex angle. Equivalently, in a convex polygon, a line joining ANY two points in (or on) the polygon lie wholly within (or on) the polygon. In a concave polygon there are at least two points for which the line joining them does not lie wholly inside (or on) the polygon.
It is convex if you look at it from the inside but it is not any kind of polygon.
A convex pentagon is one in which none of the interior angles are reflex.