a cylinder, a sphere, and a cone
No. An example of a 3D object without vertices is a sphere.
Vertices (singular vertex) are the corners.
Polygons for example
That depends on the figure. A regular tetrahedron, for example, has four vertices.
Not much, other than they both can be parts of a 3-dimensional figure. "Vertices" is plural of "vertex", which is a point. The vertex of an angle, for example, is the point of intersection between two lines. 2-dimensional and 3-dimensional figures can have vertices. An "edge", however, is a line segment, and only 3-dimensional figures (cubes, pyramids, etc) can have edges. An edge is the intersection of two sides of a figure.
Use the coordinates of the vertices.
Spheres, cylinders and sometimes prisms
A very common shape: the triangle. It is a flat plane that has only 1 face and always has 3 vertices or corners.
They are square based pyramids
cylinders are 3d figures that have two circular bases and curved side Vertices are points in which three faces meet
3 squares and 4 triangles will have 24 vertices. There will be 4 vertices for each of the 3 squares. Since there are 3 squares, that will be 12 vertices. There are 3 vertices for each of the 4 triangles. Since there are 4 triangles, that will be 12 vertices. 12+12=24.
A triangle has 3 vertices.