four
There are no right angles (90 degrees) in a hexagonal pyramid.
a square pyramid has 4 triangles
A pyramid could have any number of right angles between, and inlcuding, none and 8.
There are no right angles in a square based pyramid, so Pythagoras and his theorem are not involved.
A square pyramid has 16 angles.
A square based pyramid has 12 angles
20 angles
5 angles
One
No angles are larger than 90 degrees in a square based pyramid.
4
No, but a square pyramid does.
It's has all acute angles
angels are a fictional creature. you mean angles.
four
Just the one and it is the base face