Golden ratio (The simplest version of the golden ratio. In a right triangle.) Koen Holwerda. 2z 11-05-14Index:Page 1. Title page.Page 2. Index.Page 3. Introduction.Page 4+5. How did they get to the golden ratio? Page 6+7 What is the most important function of the golden ratio Page 8+9 How can you correctly use the golden ratio to prove that it is a fixed number and which one? + 11 You can find examples of the golden ratio in everyday life Page IntroductionIs my article about the golden ratio? I chose this topic because I had never heard of it before and because it seemed fun to me. My main question for this research is: “What can you use the golden ratio for? My secondary questions are:1. How did they get to the golden ratio?2. What is the most important function of the golden ratio?3. How can you correctly use the golden ratio to demonstrate that it is a fixed number and which one?4. Can you find examples of the golden ratio in everyday life?The golden ratio. 'Divina Proportia' meaning divine proportion. Also abbreviated to the Greek letter: (PHI). It looks a little like the number π. Π Gives the ratio of the diameter of a circle to the circumference of the circle, which has a value of 3.14. Very similar to π in this sense, it also indicates a ratio. Only then a ratio of line segments Just like π, it also has a fixed number. Or should I say two landline numbers. Positive:  1.61803398875 or negative:  0.61803398875. The positive number is the "Official" one, while the negative one is the subject of many doubts. Many say it has something to do with it but not really me......middle of paper......we are serious and are shared by each other close by. If you look even more specifically, you'll see that (usually) 5 goes clockwise and 8 goes counterclockwise. These numbers also follow each other in the Fibonnaci series! And that's not the only thing in the sunflower that has to do with the golden ratio. Like most plants, sunflower leaves spiral. Not so much in one place and not in one round. But in different places and in multiple shifts. These are (almost) always the same as the Fibonnaci series. So, for example, 2 leaves for 1 round (1/2) or 8 leaves for 3 rounds (3/8). There are many examples of the golden ratio in everyday life, but to mention them all I would have to write 3 pages. So there will be some changes in the reflection on this research, but it is now ready for research eleven.