How does the diagram illustrate the Pythagorean theorem?

Answer:
The diagram illustrates the Pythagorean theorem because if you add the area of the two smaller squares it equals the area of the largest square.
Step-by-step explanation:
the 2nd biggest square's area is 64. (A=lw
A=8x8
A=64)
the smallest square's area is 36. (A=lw
A=6x6
A=36)
the smaller square's areas combined is 100. (64+36=100)
the largest square's area is 100. (A=lw
A=10x10
A=100)
the largest square's area (100) equals the smaller square's areas combined (100).