The figure shown on the right illustrates that the numbers 1 2 3 4 5 and 6 can be placed around a triangle in such away that the three numbers along any side sum to 9 which is shown in the circled number inside the triangle Arrange the numbers 1 2 3 4 5 and 6 to give the sums circled in the next three figures a Determine the numbers for a b c and d for the triangle shown to the right a b c d 6 6 2 10 d 4 BLAH