Question

Little Johnny buys 10 trees at a local nursery. How does he plant these 10 trees in 5 rows with 4 in each row?

Answer 1

he draws a pentagon.
he draws all of its diagonals.
he will be able to see a 5 pointed star in it.
he plants one tree at each vertice of the pentagon.
and one at each of the intersection points of the diagonals.

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