Some concave hexagons can. For an extremely crude figure, but the best that this browser will allow, see below (the full stops are only for positioning the diagonals):
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\.................\
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/___________/
yes there are several ways to tesselate this figure.
Any hexagon has six sides.
It can be but need not be.
A regular hexagon has zero right angles. An irregular convex hexagon could have 0-3.
By themselves, only 3: triangle, square and hexagon. But there are combinations: eg octagon + square.
Yes, a regular hexagon does tessellate.
Triangle, square, hexagon.
Yes they do. In fact the honeycomb that bees make is a natural tessellation of the hexagon.
yes there are several ways to tesselate this figure.
It can be, but it need not be.
Any hexagon has six sides.
It can be but need not be.
No
Yes; it will form a honey-comb shape. <http://gwydir.demon.co.uk/jo/tess/bighex.gif> for image.
A convex hexagon is a six-sided polygon in which all interior angles are less than 180 degrees.
a polygon with 6 sides * * * * * The fact that is has six sides makes it a hexagon but that does not explain ""convex". A convex polygon is one in which none of the angles is a reflex angle. An alternative definition of convex is that a line joining any two points inside the hexagon is wholly inside the shape.
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