That depends on the figure. A regular tetrahedron, for example, has four vertices.
It is a flat faced 4 sided quadrilateral that has 4 vertices.
A trapezoid is a flat faced 4 sided quadrilateral that has 4 vertices
Two triangles.
Vertices (singular vertex) are the corners.
polygon of more than 4 sides and a triangle.
Polygons for example
A shape that has more than 4 vertices is called a polygon. Polygons are closed geometric figures with straight sides. Examples of polygons with more than 4 vertices include a pentagon (5 vertices), hexagon (6 vertices), heptagon (7 vertices), octagon (8 vertices), nonagon (9 vertices), decagon (10 vertices), and so on. Each vertex represents a point where two sides of the shape meet.
Rectangles are 2-dimensional figures- they lie in a plane- they have four vertices There really is no such thing as a 3D rectangle. If you mean a rectangular prism, it has 8 vertices, 4 on each of its two parallel faces.
No. An example of a 3D object without vertices is a sphere.
a cylinder, a sphere, and a cone
Use the coordinates of the vertices.
Spheres, cylinders and sometimes prisms