It has 4 and they all meet at right angles which is 90 degrees
none, no
4
Two.
Do pyramids have perpendicular faces ?
Including its diagonals there are 6 perpendicular lines
A square has four perpendicular sides.
The adjacent sides of a square are perpendicular.
A square base pyramid has 8 perpendicular lines. These include the 4 edges of the square base perpendicular to each other and the 4 edges connecting the apex of the pyramid to each vertex of the base, which are also perpendicular to the base.
Yes because the 4 corners of a square are perpendicular in that they meet at right angles and also the diagonals of a square are perpendicular
No, a square has four perpendicular sides.
Perpendicular would be at a right angle. If your sides are abcd, then ab, bc, cd, and da are perpendicular pairs.
8