There are four number of faces in a tetrahedron.
None because a tetrahedron is a triangular based pyramid with 4 faces, 6 edges and 4 vertices
Four.Four.Four.Four.
2
2
0 lines
A tetrahedron has 6 vertices that are all nonparallel.Therefore, a tetrahedron has 0 parallel lines.
None.
The number 8 has only 2 lines of symmetry; Vertical and Horizontal.
We'll get a n number of vertical angles (pairs)
It has one vertical line of symmetry
A tetrahedron does not normally have any verticals but it can have three [mutually] vertical edges at one vertex, or two sets of mutually perpendicular edges at two vertices.
4 sides, each of which is a isosceles triangle with 3 lines of symmetry, gives 12.
4
The digit 8 has two lines of symmetry, vertical and horizontal. The number is symmetrical from top to bottom and from left to right.
Two
There are 4 verticle lines in a cube :)