a cube * * * * * A cube is only one example. Any one of the five Platonic solids - tetrahedron, cube or hexahedron, octahedron, dodecahedron or icosahedron - are made up from congruent plane faces.
One: a tetrahedron is a single solid.
No. A right angle would be 90 degrees; a tetrahedron is composed of four equilateral triangles, which by definition have equal angles of 60 degrees apiece.* * * * *Wrong!A tetrahedron is a solid shape enclosed by any four triangles. Only a regular tetrahedron that requires equilateral triangles. So an ordinary tetrahedron can have right angles - up to 3 of them at one vertex.
A tetrahedron.
A four faced figure is a tetrahedron. If they are all congruent triangles, they are all equilateral triangles and it is a regular tetrahedron - one of the 5 Platonic Solids.
a cube * * * * * A cube is only one example. Any one of the five Platonic solids - tetrahedron, cube or hexahedron, octahedron, dodecahedron or icosahedron - are made up from congruent plane faces.
One: a tetrahedron is a single solid.
24 for the cube (any one of 6 faces on the table, and then any one of 3 facing you), 12 for the tetrahedron (4 down and 3 facing).
A pentagonal prism, a hexagonal pyramid, a cube with one vertex (corner) cut off, a tetrahedron with three vertices cut off - these are some of the possibilities.
No. A right angle would be 90 degrees; a tetrahedron is composed of four equilateral triangles, which by definition have equal angles of 60 degrees apiece.* * * * *Wrong!A tetrahedron is a solid shape enclosed by any four triangles. Only a regular tetrahedron that requires equilateral triangles. So an ordinary tetrahedron can have right angles - up to 3 of them at one vertex.
Possibly a cone? No, A cone is one of the few solid objects with one vertex. A pyramid (which includes a tetrahedron) has 4 or more. A prism (which includes a cube) has 6 or more (but even numbers only). Other regular solids are octahedron (6 vertices), dodecahedron (20), icosahedron (12).
A solid is a substance that keeps its shape because its particles cannot flow freely. The particles in a solid are tightly packed together and vibrate in place, giving the solid a fixed shape and volume.
A tetrahedron.
Tetrahedron - basic to theory of chemical bonds and one of the classic Platonic solid shapes
A cube can only have one shape "cubic" - (someone has asked you a trick question). However, certainly the rate at which a piece of solid ice melts IS affect by its shape, the greater the surface area of the piece of ice, the faster it will melt.
A tetrahedron.
Cube * * * * * A cube is a very special case. A more general one would be a rectangular prism (shape of a brick). Even more would be a rhombic hexahedron.