all rhombus r quadrilaterals and all quadrilaterals r polygons
Isolateral polygons. They need not be regular polygons. For example, a rhombus has all congruent sides but it is not a regular polygon.
they are polygons
Four of them are: square, rectangle, rhombus and a parallelogram
The answer is no. It is true of triangles, but not necessarily of other polygons. A good counterexample is the Rhombus. You can define a Rhombus as a quadrilateral with 4 congruent ( equal) sides. However, only the opposite angles are equiangular, not all 4 angles. Picture, if you will, a very elongated Rhombus to easily see this. The only equiangular Rhombus is the Square. Many regular polygons are equiangular but not all.
Yes.Yes.Yes.Yes.
No, the concept of supplementary does not apply to polygons.
An obtuse triangle, a rhombus, a hexagon, and a parallelogram are all polygons whose exterior angles add up to 360 degrees
All regular polygons. But there are also others which look like squashed versions of regular polygons. A "squashed" square makes a rhombus. Similarly there are squashed polygons with larger numbers of sides. They should be called equilateral polygons, but that phrase is not much used.
A square, a rhombus and a kite all have perpendicular diagonals that intersect at right angles
All 4 sided polygons are quadrilaterals such as a square, rectangle, parallelogram, rhombus, kite ... etc
Square,Triangle,Rectangle,Rhombus and Pentagon.