A trapezium.
Sides = 2 (front and back) Corners = 6 (mostly)
A square has 4 corners,4 sides and 2 faces because it has one on front and one behind.
an ovalish shape, like this () Or perhaps a semicircle.
a paper
2 sides, 2 corners. (:
This shape has ten sides
A crescent has two [curved] sides and two corners.
2 side 2 corners and same lenght
Quadratic
A trapezium.
.2d has 2 dimensions: corners and sides.3d has 3 dimensions: vortices (corners), sides and faces.
Sides = 2 (front and back) Corners = 6 (mostly)
A square has 4 corners,4 sides and 2 faces because it has one on front and one behind.
If the semi circle is joined together with a straight line then it will have 2 corners and 2 sides.
3 corners (vertices) and 3 edges (sides).
square or rectangle