The diagrammatic shapes show a set of triangular dominoes made up from the numbers in the table. The number in the centre of each domino show the sum of the numbers on its edges. Where one domino meets another the numbers are the same, so in order to save writing it twice, a space has been left where they meet. By using logic, fill in the numbers around each triangular domino.If you register at http://www.trigonpuzzles.com/ you get a free e-book with puzzles.
