Explore Related Concepts


how many faces does a triangular prism have
Best Results From Wikipedia Yahoo Answers
From Wikipedia
In geometry, a triangular prism is a threesided prism; it is a polyhedron made of a triangular base, a translated copy, and 3 faces joining corresponding sides.
Equivalently, it is a pentahedron of which two faces are parallel, while the surface normals of the other three are in the same plane (which is not necessarily parallel to the base planes). These three faces are parallelograms. All crosssections parallel to the base faces are the same triangle.
A right triangular prism is semiregular if the base faces are equilateral triangles, and the other three faces are squares.
The dual of a triangular prism is a 3sided bipyramid.
The symmetry group of a right 3sided prism with triangular base is D_{3h} of order 12. The rotation group is D_{3}of order 6.
The symmetry group does not contain inversion.
It can be considered as a truncatedtrigonal hosohedron.
Volume
The volume of any prism is the product of the area of the base and the distance between the two bases. In this case the base is a triangle so we simply need to compute the area of the triangle and multiply this by the length of the prism:
V = \frac{1}{2} bhl where b is the triangle base length, h is the triangle height, and l is the length between the triangles.
Related polyhedra
It is related to the following sequence of uniform truncated polyhedra.
From Yahoo Answers
Answers:you're right, 5. :) http://www.korthalsaltes.com/foto/triangular_prism_rightangel.jpg http://ritter.tea.state.tx.us/student.assessment/resources/online/2006/grade10/math/images/25graphicaa.gif
Answers:Two long trapezoids; two triangles (Equilateral?); a rectangular base So 5 faces
Answers:
Answers:6 (vertices are points, or sharp corners). Each triangle has three Look at this one: http://education.yahoo.com/homework_help/math_help/solutionimages/mini6and7gt/7/1/1/mini6and7gt_7_1_1_1_60/f40991.gif You can see that it also has 9 edges: 3 on each triangle, and three connecting them together Finally, it has 5 faces: the 2 triangles and the 3 rectangles.