The golden ratio appears when you divide a line, call it "a + b", into two parts, "a" and "b", such that the ratio b / a is the same as (a + b) / b. In words: the ratio of the total length to one of its parts is equal to the ratio of this part to the other part. This ratio (for example, b / a) is exactly (1 + square root of 5) / 2, or about 1.618. Its reciprocal (in the example, a / b) is one less: about 0.618.
My reply: Thank you Hilmarz! But I just found out a more simple way for stupid people like me! XD The golden ratio is when you divide a line into two unequal parts, so that the whole length divided by the longer part is equal to the longer part divided by the smaller part! But if I ever become a genius, I'll come back here and re-read your version!
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To change percentages into fractions, you simply divide by 100.
A great many things have the golden ratio in them varying from things fabricated by humans such as architecture, the proportions of the sides of a book also fall into the golden ratio. The golden ratio also occurs naturally for example the spiral in the snail's shell falls into the golden ratio. Generally most man made things have the golden ratio in them as it has been found quite simply, to look good.
The Roman numeral for 8 is VIII which is simply V (5) + I (1) + I (1) + I (1).
If the sides of the triangle are equal in length to the radius of the circle, then you can simply place the two ends of the hypotenuse on the perimeter of the circle, and it's remaining corner will lie at the circle's center.
1/4 + 1/4 = 2/4. If the denominators are equal, you simply add the numerators. 2/4 = 1/2. To simplify a fraction, you can divide numerator and denominator (top and bottom part) by the same number, in this case, 2.