HELSBY HIGH SCHOOL

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HELSBY HIGH SCHOOL

• CELTIC AND AFRICAN ART PRESENTATION

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Euclid of Alexandria

• All about Euclid of Alexandria

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A picture
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When he was alive!

• He was born in 325BC
• And he died in 265BC

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All about Euclid
Euclid was a Greek mathematician best known for
his treatise on geometry
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Extra information on Euclid

• Very little is known about the life of Euclid.
  Both the dates and places of his birth and death
  are unknown

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His work

• The subjects include the Pythagorean theorem,
  algebraic identities, circles, tangents, plane
  geometry, the theory of proportions, prime
  numbers, perfect numbers, properties of positive
  integers, irrational numbers, 3-D figures

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Summary

• All in all Euclid had a very successful life and
  discovered a lot about maths while he was alive

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THE HISTORY OF CELTIC KNOTS
Not much history of the knots is available before
the beginning of the Christian influence on the
Celts in about 450 A.D. There is much evidence
for the use of geometric patterns as
ornamentation particularly in jewelry before that
time. Some historians have theorized that early
Celtic religion prevented their depicting
creatures realistically. The same pre-Christian
designs found their way into early Christian
manuscripts and artwork with the addition of
depictions from life, such as animals, plants and
even humans. In the beginning the patterns were
intricately interwoven cords, called plaits,
which can also be found in other areas of Europe,
like Italy in 6th century. A fragment of a Gospel
Book, now in the Durham Cathedral library and
created in northern Britain in the 7th century,
contains the earliest example of true knotted
designs in the Celtic manner.
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The Turtle Knots

• The Turtle Knot code
• ABA BCB ABA
• We have used this code to create our own patterns
• We also changed the code to create weird and
  wonderful designs

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Turtle Knots

• Colour can make the Celtic knot look a lot more
  complex than it really is
• We experienced problems, some of which could not
  be solved
• The surprise of how the pattern will develop
  makes it more enjoyable than most knot art

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AFRICAN SONA PATTERNS
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HOW MANY CROSSINGS?
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THANK YOU FOR LISTENING ANY QUESTIONS????