Question

the shape of carbon tetrachloride molecule is called

Answer 1

tetrahedral

Answer 2

This is how is how the compound looks. To get this shape, the four electron pairs or regions of carbon (negatively charged) have to be separated as far as possible to mimimise repulsion, and to do that the molecule adopts a tetrahedral shape in 3D. This supports the valence shell electron pair repulsion theory (VESPR).
Hope this helps.

Answer 3

Try drawing the molecule and you can see the shape.
Generally if the carbon atom is bonded to four atoms it will have a tetrahedral shape, three, a trigonal planar shape, two with two lone pairs a bent shape, and three with one lone pair a pyramidal shape.
Of course if it is directly bonded to two atoms in the case of chlorine Cl2 it will have a linear shape.