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Q: What has 8 congruent equilateral triangles faces and has 6 verticieces?

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Icosahedron

An Icosahedron.

An equilateral triangular pyramid

octahedron

octahedron

An icosahedron.

Octahedron- A polyhedron with eight faces. All faces of a regular octahedron are congruent, equilateral triangles.

The minimum numbers of congruent faces are as follows: On an equilateral triangular prism: one pair of triangles On a right equilateral triangular prism: one pair of triangles and one triplet of rectangles.

This shape is called a Icosahedron , I think.

It is a regular triangle pyramids

Their faces are equilateral triangles.

A solid with 8 faces is an octahedron.As all faces are the same it is a regular octahedron.As such it is one of the five platonic solids - the only five 3D objects that can be regular: the tetrahedron (4 equilateral triangles for the faces), the hexahedron (usually called a cube with 6 square faces), the octahedron (as asked, 8 equilateral triangles for the faces), dodecahedron (12 regular pentagons as faces), icosahedron (20 equilateral triangles as faces).

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