24
A trapezium has no right angles therefore there are no perpendicular lines. If it had perpendicular lines, it would be a square or rectangle.
a square i think
make a square
4
24
Both!! gezz that's easy :P
4 or 8 Four (the edges of the base square) Perhaps four more, depending on the height of the pyramid, the opposing edges could be perpendicular to each other at the apex.
a square based pyrmaid has 24 lines of symitry
24
24
Two pairs.
"perpendicular"
Including its diagonals there are 6 perpendicular lines
Right angles are made up of perpendicular lines. A square has four of them.
yes it has perpendicular lines
A trapezium has no right angles therefore there are no perpendicular lines. If it had perpendicular lines, it would be a square or rectangle.