assuming you meant a pentagon (as i have never heard of a pentgon and neither has Google), it is a two dimensional shape with five sides and five angles
6
Yup
5
It has 5 sides
a pentgon
a Pentagon has 5 sides.
A pentagon has no parallel sides.
No. A quadrilateral is any shape with 4 sides. Pentagons have 5.
5 lines
triangle pentgon heptagon nonagon etc.
If you know one side you know the perimeter which is the whole thing around it.
Exterior angles add up to 360 degrees Interior angles add up to 540 degrees