No but a right angle triangle does
None normally
A triangular-based pyramid has a total of six angles. Each of the three triangular faces has three angles, totaling nine angles. However, three of these angles are shared at the base of the pyramid, resulting in a total of six unique angles in a triangular-based pyramid.
A triangle-based pyramid has one right angle at the apex where the three triangular faces meet. This right angle is formed by the intersection of the base of the pyramid and one of its slant edges. The other angles in a triangle-based pyramid are typically acute angles formed by the base and the slant edges.
a triangular pyramid, i think
four
Four.
The shape you are describing is a triangular pyramid. A triangular pyramid has a base that is a triangle and three triangular faces that meet at a single point called the apex. The base of the pyramid is a rectangle, which is a quadrilateral with four right angles. The triangular faces of the pyramid connect the vertices of the base to the apex.
A triangular prism can have right angles. If the prism has two triangular ends, then each of the three 'sides' meets each of the ends at right angles.
A square pyramid has a total of 8 angles. Each of the 4 triangular faces has 3 angles, totaling 12 angles. However, 4 of these angles are shared where the faces meet at the base, resulting in a total of 8 unique angles in a square pyramid.
There are no right angles (90 degrees) in a hexagonal pyramid.
None because a tetrahedron is a triangular based pyramid with 4 faces, 6 edges and 4 vertices
Yes. Four solid angles comprising 12 plane angles.