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Mathematics 21 Online
OpenStudy (anonymous):

Which of the following Platonic solids is also a pyramid? A. tetrahedron B. Hexahedron C. octahedron D. Icosahedron E. dodecahedron F. None of These

OpenStudy (anonymous):

it would be A. tetrahedron

OpenStudy (anonymous):

It's not more than one?

OpenStudy (welshfella):

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OpenStudy (anonymous):

an octahedron would be like 2 pyramids connected to eachother

OpenStudy (welshfella):

- triangular pyramid

OpenStudy (welshfella):

thers only one

OpenStudy (anonymous):

So A,C,D and E

OpenStudy (anonymous):

Nvm

OpenStudy (anonymous):

I found this: Platonic solids are three-dimensional shapes that have equal sides, angles, and faces. There are five Platonic solids. The tetrahedron is a four-sided polyhedron with four equilateral triangles for faces. It looks like a three-sided pyramid (where the fourth side is the base). The cube is a six-sided polyhedron with six squares for faces. The octahedron is an eight-sided polyhedron with eight equilateral triangles for faces. It looks like two four-sided pyramids attached at their bases. The dodecahedron is a 12-sided polyhedron with twelve equilateral pentagons for faces. The icosahedron is a 20-sided polyhedron with twenty equilateral triangles for faces.

OpenStudy (anonymous):

Wait 'Also a Pyramid' Just now read that

OpenStudy (welshfella):

what is also a pyramid?

OpenStudy (welshfella):

B,C and D are not pyramids

OpenStudy (anonymous):

It was Tetrahedron and Octahedron it was asking for Platonic Solids athat are also pyramids

OpenStudy (welshfella):

Oh that surprises me - I cant see how a n octahedron is a pyramid

OpenStudy (welshfella):

I suppose you can call it a bipyramid - which qualifies as a pyramid?

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