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Golden Mean And The Pentagon
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Examining the relationship between the number 1, the golden ratio 1 : φ and a pentagon
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Golden Mean And The Pentagon
1.
Golden Mean and
the pentagon _ Stonemasonry technical skills at SkillsTech Australia
2.
3.
Step 1:
Draw vertical and horizontal centerlines at page centre right, intersecting at point A
4.
Step 2:
Construct a circle centred at A with radius 1 [1 x 100mm]
5.
Step 3:
Construct a double square with side 1 [1 x 100mm]
6.
Step 4:
Join the diagonal of the double square from top right to bottom left, intersecting the horizontal line at point B
7.
Step 5:
Centre compasses at point B and with radius BC = scribe semicircular arc BDE
8.
Step 6:
Centre compasses at point C and with radius CE scribe an arc to intersect the circle at point F
9.
Step 7:
Step off CF around the circle and join the points to form a pentagon
10.
Step 8:
Construct the Golden Rectangle AC : AD = 1: so that (a+b) : a = a : b
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