The golden ratio was often used in the design of Greek and Roman architecture.

### Sacred geometry is geometry

that is sacred to the observer or discoverer. This meaning is sometimes

described as being the language of the God of the religion of the

people who discovered or used it. Sacred geometry can be described as

attributing a religious or cultural value to the graphical

representation of the mathematical relationships and the design of the

man-made objects that symbolize or represent these mathematical

relationships.

Making your first Fibonacci spiral: First, get some graph paper, and with a pencil,

draw two parallel lines 13 squares long. One on top of the other; look at

the picture below; the two lines are the top and bottom of the rectangle.

Next, join the ends of the two lines to make a rectangle. Next, you draw a

line at the eighth square to make a square 8 boxes long and eight boxes

high. The box you just made is box eight below. Next, in the upper

right-hand corner, draw another square 5 boxes long by five boxes high,

that will be square number 5 in the picture below. Then, you draw

another square, three boxes by three boxes, where the number 3 box is below. Next,

you draw a square of 2 boxes by two boxes like the one below. Next two by 2,

and the next one by 1.

Then, you draw your spiral, which will look

something like this.