Question

Lorena runs a landscape company. A customer wants her to plant 10 trees, but the trees have to be planted in rows with 4 trees in each row. What shape will the trees be planted in?

Answer 1

There are several shapes that fulfill these requirements. All involve to parallel rows of 4, then the other two trees forming a perpendicular for (using a tree from each of the other two rows).
E.g.

X X X X
X X X X
X
X

X X X X
X
X
X X X X

X X X X
X
X X X X
X