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An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The faces of octahedra can be triangles, quadrilaterals, pentagons, hexagons or heptagons. There are many examples of octahedra - a hexagonal prism, for example - which has no triangular face. At the other extreme, all the faces of a regular octahedron are equilateral triangles.

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Q: Are all the sides of a octahedron equilateral triangles?

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

What polyhedron has eight sides and all of the are equilateral triangle?

A regular octahedron.

octahedron

an octahedron

octahedron

Triangles are equilateral triangles only when all of their 3 sides are equal in lengths.

A regular octahedron.

no. Equilateral triangles have all equal sides. Isoceles triangles only have 2 congruent sides. Isosceles triangles have 2 equal sides.

yesthey are all regular equilateral triangles.(p.s.it is a octahedron!)

An octahedron.

No, not at all, all isosceles triangles aren't equilateral since an equilateral triangle is a triangle with all of its sides equal, i.e. all sides of an equilateral triangle are equal, but in an isosceles triangle only two of its sides are equal.

No, not all isoceles triangles can be equilateral triangles because an equilateral triangle has sides that are all equal to each other and an isoceles triangle has only two sides that are equal to each other.

Equilateral triangles all have the same sides.An equilateral triangle has three sides that are all equal.

All triangles have exactly three sides. This is true whether the triangle is equilateral or not. If the triangle is equilateral, then the three sides will all be equal in length.All triangles have three sides.

A regular octahedron.

No because a triangle is only an equilateral triangle when it has 3 equal sides.

All of them are, isosceles triangles top 2 sides are equal. Equilateral triangles have 3 equal sides and satisfy the requirements of isosceles.

Some triangles are equilateral, but not all of them. There are three types of triangles. Triangles which have three equal sides and three equal angles are called equilateral triangles. Isosceles triangles have two equal sides and two equal angles. Scalene triangles have no equal sides and no equal angles.

all triangles have three sides

All triangles have straight sides.

no. if one triangles sides are all 2 and one triangles sides are all 3 then they are not congruent

False. TrueAn isosceles triangle has at least 2 equal sides. An equilateral triangle has 3 equal sides. Therefore all equilateral triangles are isosceles, but not all isosceles triangles are equilateral.

An equilateral TRIANGLE is not an isosceles ANGLE. However, all equilateral triangles are isosceles triangles. By definition, an isosceles triangle has at least two sides that are congruent. An equilateral has three sides that are congruent, thus an equilateral triangle is an isosceles triangle.

No because an equilateral triangle has 3 equal sides but an isosceles triangle has only 2 equal sides