Using the numbers from $1$ to $9$

Can you form a magic triangle?

How many magic triangles can be formed?

What are the sums of the sides of the magic triangle?

 

Arrange the odd numbers from $1$ to $17$ without repetition to get a sum of $30$ on each side of the magic triangle.

Put the numbers $1, 2, 3, 4, 5, 6, \& 7$ in the circles so that each straight line of three numbers add up to the same total.

Place the number $1$ to $12$ in the $12$ circles so that the sum of the numbers in each of the six lines of the star is $26$. Use each number from $1$ to $12$ exactly once. Find more possible ways?

How many Triangles are there in each of the following figures?

How many Triangles are there in each of the following figures?

How many Triangles are there in each of the following figures?

How many Triangles are there in each of the following figures?

Find the number of dots in the tenth figure of the following pattern.