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1. When was Pi Day first celebrated in the world?
2. When was the first day of Pi in our country?
3. Where does the symbol Pi come from?
4. What is Pi?

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Duzinchevici Mariela / Gaudeamus HS / Moldova

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Duzinchevici Mariela / Gaudeamus HS / Moldova

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Pi Day was first celebrated on 14 March 1988
The first recorded use of π as a mathematical symbol comes from the Welsh mathematician William Jones in a 1706 work called Synopsis Palmariorum Matheseos, in which he abbreviated the Greek περιϕέρεια, (meaning “circumference,” or “periphery”) to its first letter: π.
Pi is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14.

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The number pi 2 1 9 6 3 i p 5 The history of the number "p" 5 2 The number who all races of the worlds tried to calculate...Babylonians, Jews, Egyptians, Greeks, Iranians, Indians, Chinese, Europeans, Japoneze, Americans. What is the number pi, and how it results? 5 1 The The But

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Etiler Anatolian High Schools'   eTwinning Team

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Etiler Anatolian High Schools'   eTwinning Team

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The idea of "Pi Day" originated with physicist Larry Shaw, who organized the first Pi Day celebration at the San Francisco Exploratorium in 1988. Almost exactly twenty-one years later, on March 11, 2009, the U.S. House of Representatives passed a resolution proclaiming March 14 to be National Pi Day.
The first recorded use of π as a mathematical symbol comes from the Welsh mathematician William Jones in 1706.

The symbol π comes from the Greek letter π because the Greek word for “periphery” begins with the Greek letter π. The periphery of a circle was the precursor to the perimeter of a circle, which today we call circumference.

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World Pi Day began to be celebrated in 1988, on March 14th. The idea belongs to the physicist Larry Shaw. The British mathematician William Jones in 1706 used the Greek letter pi for the first time, and it became generally accepted after the work of Leonard Euler in 1737. This designation comes from the initial letter of the Greek words περιφέρεια - circle, periphery and περίμετρος - perimeter.

The study of the number pi and the refinement of its value went in parallel with the development of all mathematics and take several millennia. At first, pi was studied from the standpoint of geometry, then the development of mathematical analysis in the 17th century showed the universality of this number.

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Pi Day is an annual celebration of the mathematical constant  pi.. Pi Day is observed on March 14 since 3, 1, and 4 are the first three significant figures of π. It was founded in 1988 by Larry Shaw, an employee of the Exploratorium.
The first recorded use of π as a mathematical symbol comes from the Welsh mathematician William Jones in a 1706 work called Synopsis Palmariorum Matheseos, in which he abbreviated the Greek περιϕέρεια, (meaning “circumference,” or “periphery”) to its first letter: π
Succinctly, pi—which is written as the Greek letter for p, or π—is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14

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1. 1988

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2. 2019

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3. Pi comes from the Welsh mathematician William Jones.

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1- 1988
2- 2019
3- Greek Alphabet/ William Jones
4- Pi is the ratio of the circumference of any circle to the diameter of that circle. Its is also a number with its origins in the Greek Alphabet

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1. 1988
2. 2019
3. Mathematical symbol comes from the Welsh mathematician William Jones.
4.Is the ratio of the circumference of any circle to the dimater of that circle.

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1. 1988.
2. 2019.
3. Pi comes from Welsh mathematician William Jones.
4. Pi is thr ratio of the circunference of any circle to the diameter of that circle.

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Is the radio of the circumference of any circle to the diameter of that circle

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1. 1988
2. 2019
3.  Pi is a mathematical symbol comes from the Welsh mathematician William Jones
4. The Pi is the ratio of the circumference of any circle to the diameter of that circle.

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1° -1988
2° -2019
3° -Greek Alphabet / William Jones
4° -is the ration of the circumference of any circle to the diameter of that circule.

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1.1988
2.2019
3PI is mathematical symbol comes from the Welsh mathematician William Jones.
4.is the ratio of the circumference of any circle to the diameter of that circle.

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1. 1988
2. 2019
3. PI is a mathematical symbol comes from the Welsh mathematician William Jones
4. Is the ratio of the circumference of to the diameter of that circle.

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1. 1988
2. 2019
3. Pi is mathematical symbol comes from the Welsh mathematician  William Jones 4.
4. Is the ratio of the circumferense of any circle to the diameter of that circle.

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1. 1988
2. 2019
3. Pi is mathematical symbol comes from the Welsh mathematican William Jones 4.
4. Is the ratio of the circumference of any circle to the diameter of that circle

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1 ) Pi Day was first celebrated in 1988 at San Francisco's Exploratorium, a museum of science and technology that encourages visitors to be hands-on. The holiday was founded by physicist Larry Shaw, who had been an employee of the museum for more than 15 years.
3)  The symbol π comes from the Greek letter π, because the Greek word for “periphery” begins with the Greek letter π. The periphery of a circle was the precursor to the perimeter of a circle, which today we call circumference.
4) The number π (/paɪ/; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159. It is defined in Euclidean geometry as the ratio of a circle's circumference to its diameter, and also has various equivalent definitions. It appears in many formulas in all areas of mathematics and physics.

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Pi has been calculated to over 50 trillion digits beyond its decimal point. As an irrational and transcendental number, it will continue infinitely without repetition or pattern. While only a handful of digits are needed for typical calculations, pi’s infinite nature makes it a fun challenge to memorize, and to computationally calculate more and more digits.

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What is the origin of pi?
Pi is the Latin name of the sixteenth Greek letter, π. (Mathematic notation borrows from a multitude of alphabets and typefaces.) The first recorded use of π as a mathematical symbol comes from the Welsh mathematician William Jones in a 1706 work called Synopsis Palmariorum Matheseos, in which he abbreviated the Greek περιϕέρεια, (meaning “circumference,” or “periphery”) to its first letter: π.

What does pi mean in mathematics?
The mathematical pi is defined as “the ratio of the circumference of a circle to its diameter.” It’s also known as Archimedes’ Constant, after the ancient Greek mathematician of the same name, who, in addition to coming up with an algorithm for calculating pi, also invented an early type of irrigation pump called the Archimedian screw. Very medieval-sounding, but we digress.

What makes pi so magical is that it doesn’t matter how big or small the circle may be: the pi ratio remains the same.

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Buştiuc Arina, Gaudeamus High-School, Republic of Moldova

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Buştiuc Arina, Gaudeamus High-School, Republic of Moldova

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Pi Day was first celebrated in 1988 at San Francisco's Exploratorium, a museum of science and technology that encourages visitors to be hands-on. The holiday was founded by physicist Larry Shaw, who had been an employee of the museum for more than 15 years.
The symbol π comes from the Greek letter π, because the Greek word for “periphery” begins with the Greek letter π. The periphery of a circle was the precursor to the perimeter of a circle, which today we call circumference.
Succinctly, pi which is written as the Greek letter for p, or π is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14.

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Osman Nuri Hekimoğlu Anatolian High School, Elif ONHAL 

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Osman Nuri Hekimoğlu Anatolian High School, Elif ONHAL 

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 1. The first known formal or large-scale celebration of Pi Day was held by Larry Shaw and other staff in 1988 at the San Francisco Exploratorium, where Shaw worked as a physicist. On March 12, 2009, the US House of Representatives declared March 14, 2009 as National Pi Day.
 2. 2019
 3. Pi is mathematical symbol comes from the Welsh mathematican William Jones
 4. Is the ratio of the circumference of any circle to the diameter of that circle.

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1. 1988
2. 2019
3. Mathematical symbol comes from Welsh matematician William Jones
4. is the ratio of the circumference of any circle to the diameter of that circle

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Yasemin Çetinkaya, Osman Nuri Hekimoğlu Anatolian High School,Turkey

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Yasemin Çetinkaya, Osman Nuri Hekimoğlu Anatolian High School,Turkey

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How Many Digits of Pi Do We Know?

In 1765, a German mathematician named Johann Lambert proved that π is an irrational number. That is, it could not be expressed exactly as a fraction (the ratio of two integers). This is what it means. No matter how much this number is extended, no decimal expression can equal it. This was one of the things that fascinated mathematicians. We have a ratio, but our simplicity to take advantage of it was not possible. Working on assigning an accurate value to this never-ending number has been a big theme throughout the history of mathematics.

In theory, you can simply calculate pi by drawing a perfect circle and measuring carefully. In reality, we should have formulas that calculate as many decimal places as possible. Chudnovsky algorithm is one of them. In 2021, the number of digits of the pi number as we know it got a little longer.

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Bargan Vlad / Gaudeamus high school / MD

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Bargan Vlad / Gaudeamus high school / MD

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Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 (3/14 in the month/day format) since 3, 1, and 4 are the first three significant figures of π. It was founded in 1988 by Larry Shaw, an employee of the Exploratorium. Celebrations often involve eating pie or holding pi recitation competitions. In 2009, the United States House of Representatives supported the designation of Pi Day.
Succinctly, pi—which is written as the Greek letter for p, or π—is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14. But pi is an irrational number, meaning that its decimal form neither ends (like 1/4 = 0.25) nor becomes repetitive (like 1/6 = 0.166666...). (To only 18 decimal places, pi is 3.141592653589793238.) Hence, it is useful to have shorthand for this ratio of circumference to diameter.
According to Petr Beckmann's A History of Pi, the Greek letter π was first used for this purpose by William Jones in 1706, probably as an abbreviation of periphery, and became standard mathematical notation roughly 30 years later.

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Frunză Andreea/Gaudeamus H-S/Republic of Moldova

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Frunză Andreea/Gaudeamus H-S/Republic of Moldova

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Succinctly, pi—which is written as the Greek letter for p, or π—is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14.
The first recorded use of π as a mathematical symbol comes from the Welsh mathematician William Jones in a 1706 work called Synopsis Palmariorum Matheseos, in which he abbreviated the Greek περιϕέρεια, (meaning “circumference,” or “periphery”) to its first letter: π.
Succinctly, pi—which is written as the Greek letter for p, or π—is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14.

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Pi day- Tacu Briana-"Gaudeamus HighSchool"

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Pi day- Tacu Briana-"Gaudeamus HighSchool"

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1.Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 (3/14 in the month/day format) since 3, 1, and 4 are the first three significant figures of π. It was founded in 1988 by Larry Shaw, an employee of the Exploratorium.
2.2019
3. The first recorded use of π as a mathematical symbol comes from the Welsh mathematician William Jones in a 1706 work.
4. π—is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi.

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The first Pi Day celebration took place in 1988 in San Francisco at the Exploratorium Museum. Larry Shaw, considered by many the "Prince of Pi", was the founder of this commemorative date. Since then the celebration has become international and has gained more and more followers.
In Portugal it is celebrated from 2019.
Pi is the Greek letter π which symbolizes a mathematical constant. Thus, the date has been remembered for 30 years on March 14, since 1988.

The date refers to the value of Pi (3.14). Thus, March was chosen because it represents the number 3 in the calendar. With this, in English countries, the composition of the dates is formed by month and day, thus 3/14.

The value of Pi is the result of dividing the length of a circle by the measurement of the diameter. Thus, it is calculated by the line that connects one point to another and that necessarily passes through the center.

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High School "Alexander Pushkin" , Republic Moldova

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High School "Alexander Pushkin" , Republic Moldova

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International Pi Day! Congratulation from Eva Averbuh, Moldova

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1. 1988.
2. 2019.
3. Pi comes from Welsh mathematician William Jones.
4. is the ratio of the circumference of any circle to the diameter of that circle

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1. The first Pi Day celebration took place in 1988 in San Francisco at the Exploratorium Museum.
2. 2019
3. It is the ratio between the circle circumference and its diameter.