Question

all the tetrahedron are regular ?​

Answer 1

Step-by-step explanation:

A regular tetrahedron is a tetrahedron in which all four faces are equilateral triangles. It is one of the five regular Platonic solids, which have been known since antiquity. In a regular tetrahedron, all faces are the same size and shape (congruent) and all edges are the same length.

Answer 2

Answer:

A regular tetrahedron is a tetrahedron

Step-by-step explanation:

A regular tetrahedron is a tetrahedron in which all four faces are equilateral triangles. It is one of the five regular Platonic solids, which have been known since antiquity. In a regular tetrahedron, all faces are the same size and shape (congruent) and all edges are the same length.

hope its hdlp please mark as brainlisr