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By definition, a regular polygon has all interior angles the same, but a concave polygon has some interior angles that are not identical. Also, it violates the axiom that all vertices lie on a circle.
While it is possible to construct a polygon with equilateral sides, to be concave would require a form that is equally convex and laterally opposite. (An example is a 'solid arrow shape.')
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Can a concave quadrilateral be regular?
No.
A square is an example of a quadrilateral that is both a regular concave polygon and a regular convex polygon?
No. There can be no regular concave polygon.
Does a quadrilateral have a convex or a concave angle?
concave
A quadrilateral that is a concave?
A chevron or arrowhead.
What is non convex quadrilateral?
A concave quadrilateral. An arrowhead or a delta, for example.
Can a concave quadrilateral be regular?
No.
Can a concave quadrilateral be a regular polygon?
No.
A square is an example of a quadrilateral that is both a regular concave polygon and a regular convex polygon?
No. There can be no regular concave polygon.
What is a concave quadrilateral?
A concave quadrilateral would be a non-convex quadrilateral. * * * * * Also known as delta or arrowhead or chevron.
Does a quadrilateral have a convex or a concave angle?
concave
Why must concave quadrilaterals be irregular?
A regular polygon has all its angles of equal measure, and its sides of equal length. In the case of a quadrilateral, that would mean a square. A concave quadrilateral must have at least one reflex angle and so cannot be a square. So it cannot be regular.
What is a reenterant quadrilateral?
A concave quadrilateral - like an arrowhead or chevron.
Can a concave quadrilateral tessellate?
yes it will...
A quadrilateral that is a concave?
A chevron or arrowhead.
What is non convex quadrilateral?
A concave quadrilateral. An arrowhead or a delta, for example.
Is a trapezoid concave?
No. A trapezoid has two parallel sides. This is not possible in a concave quadrilateral.
What is a non-convex quadrilateral?
It would be a concave quadrilateral The link below has some pics.
