The base of the triangle is 3 squares wide (from column 3 to column 1) and the height is 7 squares tall (from row 3 to row 10).
So the area of the triangle is:
Area = 0.5 * base * height
Area = 0.5 * 3 * 7
Area = 10.5 square units
Therefore, the area of the non-right triangle is 10.5 square units.