Triangles  ·  April 19, 2019, 10:55 GMT
Right now: Moon at 28°55' Libra, Sun at 29°07' Aries


Triangles - from Tetrabiblos by Claudius Ptolemy

The familiarity by triangles is as follows. Inasmuch as the triangular and equilateral form is most harmonious with itself, the zodiac also is bounded by three circles, the equinoctial and the two tropics, and its twelve parts are divided into four equilateral triangles. The first of these, which passes through Aries, Leo, and Sagittarius, is composed of three masculine signs and includes the houses of the sun, oc Mars, and of Jupiter. This triangle was assigned to the sun and Jupiter, since Mars is not of the solar sect. The sun assumes first governance of it by day and Jupiter by night. Also, Aries is close to the equinoctial circle, Leo to the summer solstice and Sagittarius to the winter solstice. This triangle is preeminently northern because of Jupiter's share in its government, since Jupiter is fecund and windy, similarly to the winds from the north. However, because of the house of Mars it suffers an admixture of the south-west wind and is constituted Borro­libycon, because Mars causes such winds and also because of the sect of the moon and the feminine quality of the occident.

The second triangle, which is the One drawn through Taurus, Virgo, and Capricorn, is composed of three feminine signs, and consequently was assigned to the moon and Venus; the moon governs it by night and Venus by day. Taurus lies toward the summer tropic, Virgo toward the equinox, and Capricorn toward the winter tropic. This triangle is made preeminently southern because of the dominance of Venus, since this star through the heat and moisture of its power produces similar winds; but as it receives an admixture of Apeliotes because the house of Saturn, Capricornus, is included within it, it is constituted Notapeliotes in contrast to the filet triangle, since Saturn produces winds of this kind and is related to the cast through sharing in the sect of the sun.

The third triangle is the One drawn through Gemini, Libra, and Aquarius, composed of three masculine signs, and having no relation to Mars but rather to Saturn and Mercury because of their houses. It was assigned in turn to these, with Saturn governing during the day on account of his sect and Mercury by night. The sign of Gemini lies toward the summer tropic, Libra toward the equinox, and Aquarius toward the winter tropic. This triangle also is primarily of eastern constitution, because of Saturn, but by admixture north-eastern, because the sect of Jupiter has familiarity with Saturn, inasmuch as it is diurnal.

The fourth triangle, which is the one drawn through Cancer, Scorpio, and Pisces, was left to the only remaining planet, Mars, which is related to it through his house, Scorpio; and along with him, on account of the sect and the femininity of the signs, the moon by night and Venus by day are co-rulers. Cancer is near the summer circle, Scorpio lies close to the winter one, and Pisces to the equinox. This triangle is constituted preeminently western, because it is dominated by Mars and the moon; but by ad­mixture it becomes south-western through the domination of Venus.

Tetrabiblos - Table of contents:  

Book I

BOOK I - Introduction
Knowledge by Astronomical Means
That it is also Beneficial
Power of the Planets
Beneficent and Maleficent Planets
Masculine and Feminine Planets
Diurnal and Nocturnal Planets
Power of the Aspects to the Sun
Power of the Fixed Stars
Effect of the Seasons and of the Four Angles
Solstitial, Equinoctial, Solid, and Bicorporeal Signs
Masculine and Feminine Signs
Aspects of the Signs
Commanding and Obeying Signs
Signs which Behold each other and Signs of Equal Power
Disjunct Signs
Houses of the Several Planets
Disposition of Terms
According to the Chaldaeans
Places and Degrees
Faces, Chariots, and the Like
Applications and Separations and the Other Powers

Book II

BOOK II - Introduction
Characteristics of the Inhabitants of the General Climes
Familiarities between Countries and the Triplicities and Stars
Method of Making Particular Predictions
Examination of the Countries Affected
Time of the Predicted Events
Class of those Affected
Quality of the Predicted Event
Colours of Eclipses, Comets, and the Like
New Moon of the Year
Nature of the Signs, Part by Part, and their Effect upon the Weather
Investigation of Weather in Detail
Significance of Atmospheric Signs

Book III

BOOK III - Introduction
Degree of the Horoscopic Point
Subdivision of the Science of Nativities
Brothers and Sisters
Males and Females
Children that are not Reared
Length of Life
Bodily Form and Temperament
Bodily Injuries and Diseases
Quality of the Soul
Diseases of the Soul

Book IV

BOOK IV - Introduction
Material Fortune
Fortune of Dignity
Quality of Action
Friends and Enemies
Foreign Travel
Quality of Death
Division of Times