A person smiling.
a half circle and a circle
a square, circle, rhombus, hexagon, and an octogon
There is no 2D shape that makes a sphere, since a sphere is 3D by definition. The closest thing to a 2D sphere is a circle.
Circle
the moon isn't a perfect sphere its kinda like a oval in a way The shape of the moon is an oblate spheroid, just like earth
a circle and a square they are both shapes
Not necessarily. If it is a semicircle - a circle bounded by an arc and the diameter of the original circle, it has two vertices - at the end of the diameter. However, a half circle need not have a side that is a straight line. It can be like the yin-yang symbol (see link). The half circle here has no vertex.
A horses' natural hoof print will look like a circle with an upside down "V" shape at the bottom of the circle (Please see related links for an image). Horses that are wearing shoes (metal plates on their hooves) will only leave half circle shapes that look like a horseshoe.
another name for a half circle is semi-circle
so all could see
a circle
a circle