A solid with 12 edges of equal length is called a regular dodecahedron. It is one of the five Platonic solids and consists of 12 regular pentagonal faces, with three meeting at each vertex. The dodecahedron is known for its symmetrical properties and is often studied in geometry and mathematics.
A sphere is a solid with no edges.
A pyramid.
Square pyramid
A triangle, as its name suggests, has 3 corners. No more, no less. A triangle itself is 2-D, meaning it is flat. A pyramid would be 3-D. It also has 3 edges. Triangles can be of different types: equilateral - all sides of equal length isoceles - exactly two sides of equal length and the other of a different length scalene - no sides of equal length.
a vertex
solid with 2 edges is a cylinder
A sphere is a solid with no edges.
A pyramid.
sphere
Square pyramid
A triangle, as its name suggests, has 3 corners. No more, no less. A triangle itself is 2-D, meaning it is flat. A pyramid would be 3-D. It also has 3 edges. Triangles can be of different types: equilateral - all sides of equal length isoceles - exactly two sides of equal length and the other of a different length scalene - no sides of equal length.
A vertex.
That is a vertex.
A corner
vertex
vertex
vertex