A Henagon has 1 side
I guess shapes that have few sides have sharper angles for instance a triangle has very sharp corners whereas a henagon has corners but they are very rounded.
As many corners as sides.
a cylinder has no corners
How Many edges & corners did cucumber have
it is called a henagon is a one sided shape
it looks like this -
a monogon or henagon
8 corners
It has 4 corners
8 corners
A notebook has 8 corners.
There are doggy 8 corners
A cone has no corners.
It has 4 corners
There are four corners on a square.
8 corners