Sixteen sticks form eight equal triangles.

The question: Can you take away four sticks and leave only four of these triangles?

The answer: Click here!

Another question: Thirteen sticks form eight triangles (six small ones and two large ones).

Can you take away three sticks and leave only three triangles?

Another answer: Click here!

Yet another question: The nine sticks shown below form three equal triangles.

How can two sticks be moved to make four equal triangles?

Yet another answer: Click here!

The fourth question: The eighteen sticks shown below form thirteen triangles (nine small ones, three medium ones, and a large one).

Can you leave only seven of these thirteen triangles by taking away just three sticks?

The fourth answer: Click here!

The fifth question: The eighteen sticks shown below form thirteen triangles (nine small ones, three medium ones, and a large one).

Can you leave only three triangles, of varied sizes, by taking away six sticks?

The fifth answer: Click here!

The sixth question: These thirteen sticks form six equal triangles.

Can you leave only three of these six triangles by removing four sticks?

The sixth answer: Click here!