Use the digits 1-6, at most one time each, to find three side lengths that are two digits each and form an acute triangle.[br][br]Make sure the three side lengths would form a triangle by making sure smallest side + middle side > largest side[br]Make sure it is obtuse by ensuring that smallest side^2 + middle side^2 > largest side^2 [br][br]Drag each digit to the tens or ones place for each box to make that side length. Check it once all digits are used.