Each side of the square below is 8 inches. mc019-1.jpg What is the probability that a point chosen at random in the square is in the blue region? 0.25 0.33 0.66 0.75

From the diagram we can see that the square has been divided into three triangles, and yet if we divide the middle triangle in half (as represented by the dashed line) we actually have four triangles that have the same area. 3/4 are shaded blue therefor the probability that a point chosen at random in the square is in the blue region is 0.75.