Magic triangle solution The area of the red triangle is 8x3/2 = 12. The blue triangle: 2x5/2 = 5. The relocation does not change that property. Also the area of the yellow and green tiles stays the same. Conclusion The areas of the upper- and lower triangle are unequal. They are not triangles because their tangents are different. (red triangle: 3/8=0,375 blue triangle: 2/5 = 0,4). By exaggeration the tric becomes clear: