A heptagon can have all 7 lines that are perpendicular to one or both its neighbours.
two if the triangle has a right angle
How many faces of cuboid
A cuboid has got six flat surfaces.
No but it has perpendicular lines that meet at right angles.
A cuboid has 8 vertices, 12 edges and 6 faces
8 corners
Oh, dude, a heptagon has like a bazillion pairs of perpendicular lines... just kidding! It actually has 14 pairs of perpendicular lines. So, like, if you ever need to find perpendicular lines in a heptagon, you've got plenty to choose from.
6 everybody knows that
A cuboid does have 12 vertices.
A cuboid has 8 vertices (not vertaices).
8