It has 7 sides
7 edges Seven
it has seven
A regular heptagon has seven sides.
A regular heptagon has no parallel sides.
It has seven sides.
There are 3 obtuse angles in a heptagon.
A regular heptagon has seven equal sides.
A heptagon has one face and seven corners.
There are 21 of them.
A heptagon can have 0, 1 or 7 lines of symmetry. 7 only if it is a regular heptagon.
A regular heptagon doesn't have right angles, but an irregular heptagon can have 5 right angles.
A pyramid with a heptagonal base will have seven edges at the bottom, and seven edges around the circumference, so 14 edges in total.