quadrilateral
nonagon
Apothem!
Apothem.
No, a pentagon is a polygon with 5 sides.
Apothem
A perpendicular diagonal is a pair of segments or lines that cross a polygon making a perpendicular
square
quadrilateral
Squares.
quadrilateral has perpendicular lines
apothem
nonagon
Apothem!
It is a rhombus.
infinite
Apothem.