How Many Squares?


by Professor Louis Hoffmann

Home / Puzzles in Education / Hands On Puzzles / Grade 7-8 /

Puzzle 1. Count how many perfect squares of all possible sizes are hidden in the cross of dots on the left. A square is counting if any four dots are placed exactly in its respective corners.

Puzzle 2. It is more difficult than previous one. You have to remove exactly 6 dots so that any four dots from those remaining would not lie in the corners of a square. So you'll get the "no-squares" position for which there are no four dots that form a perfect square.

Posted: December 11, 2007
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