None.
There is nothing in the question that requires the polygon to be regular and it is difficult to define a radius, in any meaningful way, for an irregular shape.
They are both shapes and both have 4 sides.
There is no river between Rome and Carthage. The two cities are on opposite sides of the Mediterranean Sea.
The time of year, which puts us on opposite sides of the sun.
As they are on different sides of the Mediterranean Sea, it had to be boat.
three sides
Heptadecagon.
Heptadecagon
A heptadecagon.
Heptadecagon, or Heptakaidecagon
A heptadecagon has 17 sides. The prefix "hepta-" refers to seven, and "deca-" refers to ten, combining to indicate 17. It's a polygon that can be classified as regular if all its sides and angles are equal.
Heptadecagon, or also known as Heptakaidecagon.
A 17 Sided Polygon is called Heptadecagon.
The regular polygon of 17 sides is called the heptadecagon, or sometimes the heptakaidecagon.
A regular heptadecagon, which is a 17-sided polygon, has 17 lines of symmetry. Each line of symmetry passes through one vertex and the midpoint of the opposite side or through the midpoints of two opposite sides. This symmetry arises from the equal length of all sides and equal angles of the heptadecagon. Thus, for any regular n-gon, the number of lines of symmetry is equal to n.
A polygon with 17 sides is called a heptadecagon or heptakaidecagon.(see related link for list)
the radius
They are both quadrilaterals because they have 4 sides