There is no specific term that distinguished between shapes with more than 11 sides from those with up to 11 sides.
Endecagon (or hendecagon) and dodecagon.
There are many such shapes. Any polygon with an even number of sides can have opposite sides that meet the above requirements.
Any odd-sided shape.
Any polygon can have, and every regular polygon has.
There is no specific term that distinguished between shapes with more than 11 sides from those with up to 11 sides.
Hendecagons.
Any shapes that have 4 sides are quadrilaterals
Any shapes that have 4 sides are quadrilaterals
Any shapes that have seven sides.
Any regular shapes have equal sides, including squares and equilateral triangles. Irregular shapes can also have equal sides, but not equal angles.
it is a octogon
Endecagon (or hendecagon) and dodecagon.
There are many such shapes. Any polygon with an even number of sides can have opposite sides that meet the above requirements.
Most shapes do not have equal sides. In nature, shapes with equal sides are the exception rather than the rule.
No
Any odd-sided shape.