Are these polygons similar? If so, please explain why, I'd like to learn. [see attachment]

Question

anonymous · Answer

attachment

anonymous · Answer

No they are not because : Similar means same shape.

hoblos · Answer

actually they have the same shape!! they both are parallelograms and they both have same angles
but to be similar the ratio of the sides must be equal
and since 
1.8/3  is different from  5.4/7.2
then they are not similar

agreene · Answer

a geometer would say no, because of what @hoblos  said
a topologist would say yes, because they are both 1 dimensional polygons with ratio'ed areas.

directrix · Answer

What would be the corresponding sides are not in proportion.

7.2 / 5.4 = 3/1.8 = 7.2/5.4 = 3/1.8 is not true.

The two figures are not similar.