A. icosahedron
B. dodecahedron
C. none of these
D. tetrahedron
E. hexahedron
F. octahedron
2007-04-17 03:42:08 · 7 answers · asked by bekah_2009 2 in Science & Mathematics ➔ Mathematics
there can be more than one anwser ie. a.b.d or nething not just d
2007-04-17 03:49:37 · update #1
D. Tetrahedron.
2007-04-17 03:50:04 · answer #1 · answered by Astral Walker 7 · 1⤊ 0⤋
The answer you're looking for is "tetrahedron" except that technically it's NOT a pyramid. A tetrahedron has 4 identical triangular sides. Look at just about any pyramid on earth. They all have a square bottom AND four triangular sides, for a total of five sides.
An octahedron is two real pyramids (according to the definition I just gave, square bottom and triangle sides) bottom to bottom.
2007-04-17 13:04:00 · answer #2 · answered by Gevera Bert 6 · 0⤊ 0⤋
Only the tetrahedron which has 4 equilateral triangles as faces, any of which can be the base of a pyramid.
The rest are not pyramids because the lateral faces do not consist of triangles having a common apex.
2007-04-17 03:52:00 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
D. Tetrahedron
2007-04-17 03:45:52 · answer #4 · answered by Keith P 7 · 1⤊ 0⤋
Tetrahedron is a pyramid but it is not alone called pyramid.
It is a triangular based pyramid. Pyramid can be of any polygonal base.
2007-04-17 03:48:04 · answer #5 · answered by Harsh 2 · 0⤊ 0⤋
D
2007-04-17 03:53:31 · answer #6 · answered by Jenna 4 · 0⤊ 0⤋
D
2007-04-17 03:46:47 · answer #7 · answered by Anonymous · 0⤊ 0⤋