Return to Free Library

Return to Number Menu

Previous Article                                                                         Next Article

 

The Decagon – 1440º

Interior angles = 36º

Each exterior angle = 144º

Sum of angles = 1440º

 

1440 = sum of angles of an octahedron & star tetrahedron

144 square inches = 1 square foot

144 cubits = 216 feet

 

216 x 10 = 2160 = diameter of the Moon & 1 Great Month (2160 years)

 

The Earth turns on its axis 24 hours:

24 hours x 60 minutes = 1440 minutes/day

1440 x 60 seconds = 86400 seconds/day

86400 (x 10) = 864000 = diameter of the Sun

 

122 = 12 x 12 = 144

12 Disciples of Jesus & Buddha

 

12 circles clustering around 1 (Fruit of Life)

 

12 Constellations or Houses of the Zodiac

 

12 Ages of the Precession of the Equinoxes

 

12 Hours on a clock face

 

144,000 will be saved in the Rapture prior to the Apocalypse according to the Christian Bible.

The Wall surrounding the Holy City in Revelations = 144 cubits.

Please note, the presence of 144 means that these statements are not to be taken literally.  They are symbolic.

 

144,000 smooth white casing stones once covered the Great Pyramid.

 

144,000 days = 1 Mayan baktun (394.26 years).

Reference Construction Lesson #79: Constructing a Decagon

 

Area of a Decagon

A = [5a2√(5 + 2√5)]/2                   where a = side length

 

A decagon is made up of ten golden triangles.

The golden triangle of the decagon.

The golden triangle of the pentagram.

 

 

Decagrams

Decagrams are 10-pointed stars.

There are 3 versions:

  • Two discontinuous pentagons – connect every other corner (skip 1 corner)

  • Decagonal star – connect every 3rd corner (skip 2)

  • Two discontinuous pentagrams – connect ever 4th corner (skip 3)

 

 

The Decad in Nature

The cross-section of DNA is decagonal.

 

Quasi-crystals reveal five fold symmetry and underlying long range order.

 

The Decad is found within the Passion Flower, Mountain laurel (10-point geometry within 5 petals) and Rose.

 

It is also found in the geometry of Citrus fruits (grapefruit, lemon, orange & lime) and certain pumpkins.

 

It is also found in the geometry of some sea lilies.

 

We see the Decad represented by lobster & crayfish with 10 walking legs each.

Lobsters – 20 body segments; 10 legs with claws on the ends; front pair much larger claws

Crayfish – 20 body segments; 10 walking legs

 

 

The Decagon in Art

As we saw with the Octad, the Decad is popular in Islamic tiling.

The 10-fold geometry symbolizes the regeneration and fulfillment of enlightened humanity.

 

 

Tres Riches Heures by Duc de Berry – 15th century

Adam & Eve find themselves expelled into a new beginning beyond the gate of the 10 pointed circle of Paradise.

The circle is inscribed within a square, implying that Paradise is imbedded and hidden within material manifestation.

The Cathedral of St. John the Divine – New York, NY

The design was overseen by 5 architects.

A cathedral was built from the ground up, but is meant to be viewed as descending from heaven above, hanging down from the sky.

The length is 601 feet – the number 601 related to the word “cosmos” or “orderly universe”.

Credit: Michael Schneider

 

 

Return to Free Library

Return to Number Menu

Previous Article                                                                         Next Article