Nine — The Atlas

Chinese tradition

Nine appears in Chinese tradition.
The Yijing’s classical number speech seats nine among working counts. A named nine in that number world, not an ennead dump and not eighty-one as 9×9 alone.
from Richard Wilhelm / Cary F. Baynes (translation) · I Ching (Yijing), Wilhelm 1924; Baynes English 1950
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Norse tradition

Nine appears in Norse tradition.
Snorri’s Gylfaginning speaks of nine worlds among the cosmology that tree and gap hold. A named nine in that prose, not an ennead dump and not Yijing nine alone.
from Snorri Sturluson · Gylfaginning, c. 1220
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Egyptian religion

Nine appears in Egyptian religion.
The Book of the Dead names the company of nine — the ennead — among divine assemblies the dead address. Named nine speech in that corpus, not a Norse nine-worlds flatten and not a missing Ennead entity mint.
from Raymond O. Faulkner (translation) · Book of the Dead, New Kingdom spells; Faulkner trans. 1972
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Nine is used in Pure Colour.
In Theophilus’s Divers Arts, if you wish nine traits in a colour row you place the pure colour in the sixth row — nine is the trait-count that seats that pure-colour placement.
from Theophilus Presbyter · On Divers Arts, c. early 12th century
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Nine is associated with Thirty.
In the Jewish Encyclopedia, Ab of thirty days holds the fast of the Ninth of Ab — the ninth sits inside that thirty-day Ab.
from Isidore Singer et al. · The Jewish Encyclopedia, 1901–1906
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Thirty-two is used in Nine.
In Culpeper’s English Physician, a species mix takes sweet fennel seeds nine ounces among other ounce weights in a thirty-two-part style compound filing — nine ounces is that fennel measure.
from Nicholas Culpeper · The English Physician, 1652 (and later PD editions)
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Rectangle is used in Nine.
In Agricola’s De Re Metallica, a side multiplied by itself makes forty-nine square fathoms on the rectangle meer figure — nine is the side that squares to that forty-nine.
from Georgius Agricola; Herbert Clark Hoover and Lou Henry Hoover (translation) · De Re Metallica, 1556 Latin; Hoover English 1912
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Right angle is used in Nine.
In Vitruvius’s Ten Books on Architecture, the 3-4-5 triangular figure forms a right angle, and squares described on the sides yield nine among the area numbers — nine is a square on that right-angle figure.
from Vitruvius; Morris Hicky Morgan (translation) · De Architectura, 1st century BCE; Morgan English 1914
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sources

I Ching (Yijing) · Richard Wilhelm / Cary F. Baynes (translation)
The I Ching or Book of Changes, trans. Richard Wilhelm, English Cary F. Baynes.
Gylfaginning · Snorri Sturluson
Snorri Sturluson, Gylfaginning, in the Prose Edda.
Book of the Dead · Raymond O. Faulkner (translation)
Raymond O. Faulkner, The Ancient Egyptian Book of the Dead.
On Divers Arts · Theophilus Presbyter
Theophilus, On Divers Arts (De diversis artibus / Schedula diversarum artium).
The Jewish Encyclopedia · Isidore Singer et al.
Isidore Singer et al., The Jewish Encyclopedia (1901–1906).
The English Physician · Nicholas Culpeper
Nicholas Culpeper, The English Physician (Complete Herbal).
De Re Metallica · Georgius Agricola; Herbert Clark Hoover and Lou Henry Hoover (translation)
Georgius Agricola, De Re Metallica, trans. Herbert Clark Hoover and Lou Henry Hoover (1912).
De Architectura · Vitruvius; Morris Hicky Morgan (translation)
Vitruvius, The Ten Books on Architecture, trans. Morris Hicky Morgan (1914).