Figures with rotational symmetry but with only three axes of symmetry or even no axis of symmetry are also given.
We can also construct a kind of oval or rectangle with two axes of symmetry.
Since 84 factorises very well we can make four different parallelograms.
Solving a(a+1)-b(b+1)=84*2 for 0 < b < a yields the dimensions for three trapezia.
Among a lot of convex 'hexagons' with an area of 84 I looked for figures with one axis of symmetry.
A kind of rectangle and a rhomb ring are patterns with two axes of symmetry.
I looked for hexagons with two axes of symmetry and inserted holes at the center to get a total area of 120.
Two trapezia can be made.
A pentagonal structure is also possible.
At last I solved some hexagons with no holes and one axis of symmetry.