English: Although this circle may appear to illustrate perfection, no perfect 22/7 circle such as this can be drawn, because 22/7 is not a perfect representation of pi. A perfect circle can have either 22 equal circumference units or 7 equal diameter units, but not both with all 29 units equal. If a perfect circle has 7 equal diameter units, then at least one of the 22 circumference units must be shorter than the diameter unit length. If a perfect circle has 22 equal circumference units, then at least one diameter unit must be longer than the circumference unit length. If all 29 units are the same length, then it cannot be a perfect circle.