Similar to 調和四角形

1 + 1 + 1 + 1 + ⋯

1/2 + 1/4 + 1/8 + 1/16 + ⋯

1/2 − 1/4 + 1/8 − 1/16 + ⋯

1/4 + 1/16 + 1/64 + 1/256 + ⋯

Hundredth

Circles of Apollonius

Golden rectangle

Bicentric quadrilateral

0

1

2

3

4

5

6

7

8

9

Mathematics

0.999...

Zero-dimensional space

Zero to the power of zero

One-dimensional space

1 + 2 + 3 + 4 + ⋯