8
Zero!
A triangular prism has two right angles. Each end of the prism, which is a triangle, has one right angle. The third right angle is formed where the two rectangular sides meet. So, in total, a triangular prism has two right angles.
A triangular block prism has four right angles on each of the three faces, so the total 'on all the faces' = 12.
14 if the triangular cross section has a right triangle, 12 otherwise.
A triangular prism has a total of nine angles. Each of the two triangular faces has three angles, totaling six angles. The three rectangular faces each have one right angle, adding three more angles. So, the total number of angles in a triangular prism is 6 + 3 = 9 angles.
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
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