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.
A trapezoid (UK trapezium) is a quadrilateral has only one pair of parallel sides. Otherwise, there are many irregular quadrilaterals that have no parallel sides, such as a kite or dart shape, and these include both concave and convex quadrilaterals.
Concave is a property of [irregular] polygons. A parallelogram cannot be concave.
no
square, rectangle, trapezoid, rhombus, parallelogram, kite, and irregular quadrilaterals
Quadrilaterals- Squares, Rectangles, Rhomboids, Parallelograms, kites, chevrons, trapezoids, and irregular quadrilaterals.
Every parallelogram and most trapezoids have.Oh wait! It seems to me that every quadrilateral, regular or irregular, that'snot a rectangle and not concave, must have at least two obtuse angles.
Rhombuses, rectangles, kites, parallelograms, and trapezoids are all irregular quadrilaterals.
There is no maximum number for a an irregular concave polygon. If it must be convex, then there is a maximum of 3.
A trapezoid (UK trapezium) is a quadrilateral has only one pair of parallel sides. Otherwise, there are many irregular quadrilaterals that have no parallel sides, such as a kite or dart shape, and these include both concave and convex quadrilaterals.
The described shape is a polygon with alternating concave and convex edges that meet at points. Some examples of polygons that match this description include stars, arrowheads, or certain irregular quadrilaterals.
Concave is a property of [irregular] polygons. A parallelogram cannot be concave.
no
Not all irregular quadrilaterals share the same properties; however, they all have four sides and angles that are not equal or do not have equal lengths. Irregular quadrilaterals can have varying side lengths and angles, distinguishing them from regular quadrilaterals like squares or rectangles. Examples include trapezoids and general quadrilaterals that do not conform to specific classifications.
square, rectangle, trapezoid, rhombus, parallelogram, kite, and irregular quadrilaterals
quadrilaterals
The only regular polygons which will tessellate are those with 3, 4 or 6 sides. But all irregular triangles, all irregular quadrilaterals, 15 classes of irregular convex pentagons and 3 classes of irregular convex hexagons will tessellate. In addition, there are concave polygons with different numbers of sides which will also tessellate.
rectangle and concave