Cursed Triangle

[hotmale]

I remember that question from a high school math class.

And I thought my math exams were tough!

[Stripe]

Also note that the slope of the triangles are not Identical (possibly because of the convex/concave that Boogs was talking about).

What occurs is that the slope of the bottom triangle is steeper than the top triangle by only a very little. What occurs is that over the entire slope, that "little bit" adds up to the extra space.