It's a pyramid 
That is not a prism!
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Plus a prism should be clear so that all the colour spectrum can be refracted through it when white light shone on it....the colour being red will prevent the red colour wavelength being shown!
We need Harry Hill on the case! Our TV Geometry specialist. "But it's not a cube, it's a rectangular cuboid"
Originally Posted by paglialite:
“Pyramids have four sides.”
“Pyramids have four sides.”
I think you mean faces.
Pyramids can have various numbers of faces. A tetrahedron, or triangular based pyramid has 4 faces. A rectangular based has 5, pentagonal based has 6, a circular based (or cone) has an infinite number of faces.
Originally Posted by pork.pie:
“It's a rectangular cuboid!”
“It's a rectangular cuboid!”
sorry i hadn't seen this when i wrote my post
agreed!
Originally Posted by paglialite:
“Pyramids have four sides.”
“Pyramids have four sides.”
Pyramid's can have any number of sides as long as it's three or above.
Originally Posted by The_Wag:
“Pyramid's can have any number of sides as long as it's three or above.”
“Pyramid's can have any number of sides as long as it's three or above.”
faces.
Originally Posted by The_Wag:
“Pyramid's can have any number of sides as long as it's three or above.”
“Pyramid's can have any number of sides as long as it's three or above.”
It's very hard to make a three dimensional object with less than three plane faces (sides).
Originally Posted by Born lippy:
“We need Harry Hill on the case! Our TV Geometry specialist. "But it's not a cube, it's a rectangular cuboid"”
“We need Harry Hill on the case! Our TV Geometry specialist. "But it's not a cube, it's a rectangular cuboid"”
But which one's better?
Fi-i-i-i-i-i-i-i-i-i-i-ght !!!!!!!!!!!!!!
Originally Posted by Jepson:
“It's very hard to make a three dimensional object with less than three plane faces (sides).”
“It's very hard to make a three dimensional object with less than three plane faces (sides).
”
A Morbius strip only has 2
Originally Posted by Shrike:
“A Morbius strip only has 2”
“A Morbius strip only has 2
”
Er, no it doesn't.
The realisation of a mobius strip in three dimensions with plane faces has four such faces.
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