quadrilateral
nonagon
Apothem!
Apothem.
Apothem.
Any polygon can have only 1 pair of perpendicular sides.
A perpendicular diagonal is a pair of segments or lines that cross a polygon making a perpendicular
Apothem
square
Squares.
quadrilateral
quadrilateral has perpendicular lines
apothem
nonagon
Apothem!
It is a rhombus.
infinite