14 if the triangular cross section has a right triangle, 12 otherwise.
It has 12 right angles. 4 on each rectangular side. 3*4 = 12
18
A octagonal prism has 32 right angles!!!!!
It depends on the prism. A prism that has a regular pentagon as base but is not a right prism has no right angles. At the other extreme, consider a right prism whose bases are pentagons that resemble a child's drawing of a house (square with a triangle roof). If the angles of the roof triangle are 90-45-45, the prism will have 22 right angles.
If a triangular based pyramid has any right angles it has three. (Think of the corner of a cube). There are many triangular based pyramids that do not have any right angles.
8
It has 12 right angles. 4 on each rectangular side. 3*4 = 12
Zero!
A triangular block prism has four right angles on each of the three faces, so the total 'on all the faces' = 12.
A triangular prism has three rectangular faces which, between them, will have 4*3 = 12 right angles. It also has two triangular faces and these can have another 2 right angles. So the answer is 12 or 14, depending on whether the triangles are right angled or not.
18
18
3
In a general triangilar prism, none.In a right triangular prism, three pairs and one triplet.In a general triangular prism, none. In a right triangular prism, three pairs and one triplet.
A octagonal prism has 32 right angles!!!!!
A octagonal prism has 32 right angles!!!!!
There are no right angles in an Octagon, nor a Prism