If every side of the polygon is the same length, then it is a regular polygon. If the measure of every internal angle of a polygon is the same as every other, then it is a regular polygon. The two always go together, so you need to check only one of the above criteria.
Every polygon has two of its sides intersect.
square and rhombus
Yes, it is!
No. A circle, for example, is a closed shape but it is not a polygon.
No, because there is no such thing as a "rhomus". Furthermore, a rhombus is not a regular polygon either. A regular polygon must have all its sides of equal length and all its angles of equal measure. A rhombus meets the first requirement but not the second and so is not regular.
No
No not every quadrilateral can be a regular polygon.
Yes every square is a regular polygon.
Yes every parallelogram is a 4 sided polygon
No - it has opposite angles the same.
If every side of the polygon is the same length, then it is a regular polygon. If the measure of every internal angle of a polygon is the same as every other, then it is a regular polygon. The two always go together, so you need to check only one of the above criteria.
Yes. A rhoumbus does have parellel lines
Rhomus,rectangle and parallegram
Yes. Every triangle is a polygon.
Yes in fact every polygon with 3 sides the same is a triangle
Every polygon has two of its sides intersect.