If it was an heptagon it would have 14 diagonals
A circle.
There is only one line (or line segment) that can be drawn between two distince points.
One
line segments
Seven.
66 ( 12 nCr 2 )
Such polygon is called a heptagon.
11, I believe.
They can not be line segments on the same line, but they can both be line segments.
Line segments with the same length are referred to as congruent line segments. They have identical lengths but may be oriented or positioned differently in space. When drawn on a plane, these segments can be compared using a ruler or by using mathematical notation to confirm their equality. Congruent segments are a fundamental concept in geometry, often used in proofs and constructions.
A square, a rectangle, a quadrilateral, or a trapezoid. (there's more, but I won't bore you)
congruent line segments- line segments that have the same lengths.