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Are all the sides of a octahedron equilateral triangles?
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.
How is many equilateral triangles are there in a regular hexagon?
Six equilateral triangles are found in a regular 6 sided hexagon
How many faces does octahedron has?
In geometry, an octahedron (plural: octahedra) is a polyhedron with eight faces. A regular octahedron is a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex.It is a 3-dimensional cross polytope (shape).---Wikipedia
An octahedron is made up of how many triangles?
Oh, dude, an octahedron is made up of 8 triangles. Yeah, like, imagine a stop sign, but in 3D and with triangles instead of sides. So, if you're ever in a geometry showdown and someone asks you how many triangles are in an octahedron, you can confidently say 8 and totally impress them.
How many equilateral triangles are there in a regular hexagon?
6There are six.
How many equilateral triangles in an heptagon?
None but there are 6 in a regular hexagon
How many edges are there in an octahedron?
It has 12. This solid has 8 sides, each of which is an equilateral triangle (in the case of the regular octahedron). Use the link and surf on over to Wikipedia to see a picture.
How many edges has an octahedron?
It has 12. This solid has 8 sides, each of which is an equilateral triangle (in the case of the regular octahedron). Use the link and surf on over to Wikipedia to see a picture.
How many different regular polyhedra?
Five. They are:Tetrahedron (4 triangles)Cube (6 squares)Octahedron (8 triangles)Dodecahedron (12 pentagons)Icosahedron (20 triangles).
What polygon is both equiangular and equilateral?
There are many polygons that are both equiangular and equilateral. For example, squares and equilateral triangles are both equiangular and equilateral polygons. The general term for polygons that are both equiangular and equilateral is regular.
What polyhedron has all equilateral triangles as faces?
look at ask or google to find an answer * * * * * A polyhedron with equilateral triangular faces is called a deltahedron. There are infinitely many of them but only 8 convex ones. The following three are regular: tetrahedron, octahedron and icosahedron. There are 5 more convex polyhedra which are convex but not regular (because they have differing number of faces meeting at their vertices) These are Johnson deltahedra (see link).
How many angles does the icosahedron have?
A regular icosahedron has 20 faces (equilateral triangles), 30 edges and 12 vertices.
