Guess who am I? My name is given in the box below. Oops! Spelling of my name is jumbled up.
Try to identify it from the clues given below and write it in the blank space.

(1) I am  the only regular hexahedron  and is one of the five Platonic solids.__i don’t know______
(2) I am named as triangular pyramid. ________
(3) Looks like marbles but have no vertex. ________
(4) I am a polyhedron whose base is a polygon and lateral faces are triangles . ________

jummbled words
uceb
raydimp
ndhrtteaeor
heserp