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: