a crescent has 19 sides
pentagram______The above is incorrect. A pentagram is the star-shaped thing made up of 5 lines. A closed shape with five sides is a pentagon.
A shape that has four straight sides and four angles is defined as a quadrilateral. If all four angles are right angles, it is a rectangle, and if all four sides are congruent, it is a square.
It has four sides. ;-)))))))))))))))
No. A quadrilateral has FOUR sides ('quad' is latin for 4), and so it can only have four sides. A polygon can have as many sides as you want, be that number odd or even, but a quadrilateral can only have four.
A kite and an arrow head are 2 of them
hexagon
decagon
An octagon.
Hexagon
triangle.
A nonagon has 9 sides
a crescent has 19 sides
A hexagon is an example of a regular polygon with 6 sides.
A pentagon or an irregular pentagon if the sides are unequal in length.
The honeycomb cells are in the form of a tessellated regular hexagon (six equal sides).
A nonagon is a 9 sided polygon having 9 interior angles