not all
No. Polyhedrons are any shape with multiple sides. A triangle and a prism are just two different kinds of polyhedrons.
Yes, an empty box is and No, polyhedrons don't have to be.
It has 6 angles, none of which are right angles.
Yes, the 4 inside angles are right angles
4 right angles, no other angles.
A prism is a polyhedron.
... right angles, by definition of a rectangle.... right angles, by definition of a rectangle.... right angles, by definition of a rectangle.... right angles, by definition of a rectangle.
No. Polyhedrons are any shape with multiple sides. A triangle and a prism are just two different kinds of polyhedrons.
A kite has 4 right angles (all angles of the kite are right angles), since the kite is parallel. If the kite was cyclic, then 2 right angles. And if normal kite, then 0 right angles.
Yes, an empty box is and No, polyhedrons don't have to be.
Yes, a rectangle has right angles. In fact it has 4 right angles.
Yes, the 4 inside angles are right angles
It has 6 angles, none of which are right angles.
4 right angles, no other angles.
No, the angles aren't right angles.
No, if it has right angles it is a special case, such as rectangle, but in general it does not have to have any right angles
"How are straight angles different from right angles?" Is this a statement?