Baravelle's Sprial
Infinite Series in Fractals
The square has side length 1. The triangles inside the square are isosceles right triangles.
Hint: If you draw the diagonals of the middle square, you should notice that 8 congruent right isosceles triangles make up the whole square. This should help you find the area of the shaded triangles. 
1. is the first partial sum: 
                 - It is the sum of the areas of the blue and red triangles when n = 1
                 - Compute 
2. is the second partial sum: 
                 - move the slider to n = 2
                 - find the areas of the new triangles
                 - add them to  to find 
3. Compute three more partial sums
4. What is the series that corresponds to the area of the red and blue shaded region as n goes to infinity?
5. What is the area of the red and blue shaded region as n goes to infinity?