Drag five yellow cards into each of the four rectangles.
All of the vectors you place in each rectangle should be parallel to each other.
a and b are two vectors that are not parallel to each other.
a + 2b
a  b
2a + 3b
a + b
2(a + 2b)
b  a
2a  3b
5a + 5b
2a + 4b
3a  3b
4a + 6b
b + a
2b + a
3b  3a
20a + 30b
7a + 7b
a  2b
3(a  b)
3b + 2a
2a + b  a


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