Usually none, but all ten can be perpendicular.
A regular decagon will have 5 pairs of parallel sides, however, irregular decagons can have no parallel sides.
A decagon has 10 sides. Any regular polygon with four or more sides will have pairs of sides that are parallel. A decagon will have 5 pairs of parallel sides.
How many pairs of perpendicular sides does this figure have?
Can have no pairs or one pair...
10, A decagon has a maximum of five pairs of perpendicular lines, and a maximum of 5 parallel lines. however, this isn't in black and white it can have no pairs of line either perpendicular or parallel
Usually none, but all ten can be perpendicular.
A regular decagon will have 5 pairs of parallel sides, however, irregular decagons can have no parallel sides.
A decagon has 10 sides. Any regular polygon with four or more sides will have pairs of sides that are parallel. A decagon will have 5 pairs of parallel sides.
How many pairs of perpendicular sides does this figure have?
It has 2 pairs.
Can have no pairs or one pair...
4 pairs
A decagon has 10 sides. Any regular polygon with four or more sides will have pairs of sides that are parallel. A decagon will have 5 pairs of parallel sides.
Perpendicular would be at a right angle. If your sides are abcd, then ab, bc, cd, and da are perpendicular pairs.
Assuming a regular decagon is the base of the prism, it would be 10 faces. With an irregular decagon, it is possible that two (or more) of the edges of the decagons are perpendicular, so all 12 faces could have perpendicular edges.
none