B2 فوق المتوسط English 8:44 1,293 كلمات Educational

Why A4 Paper Is a Mathematical Miracle

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Learning Stats

B2

مستوى CEFR

1,293

Total Words

469

Unique Words

6/10

الصعوبة

Vocabulary Diversity 36%

الترجمة (200 segments)

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00:00

this is not just a sheet of paper it is

00:02

an invitation

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to everything that exists for this paper

00:06

is metric which has a special property

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other pages don't dividing into each

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twain is half the whole

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uh obviously i guess but each half is

00:15

also the same

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shape as the whole the ratio of its

00:18

sides identical

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this only works for metric though for

00:22

origami and letter paper their halves

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are half as big but

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different shapes which is far less

00:27

satisfying a full sheet of metric is

00:29

named

00:30

a4 and each half a5 and each half of

00:33

that

00:33

a6 all the same shape again and so it

00:36

goes in the opposite direction

Full subtitles available in the video player

Key Vocabulary (18)

human A2 verb

To act like a normal person or to function properly in daily life. It is often used humorously when someone feels too tired, stressed, or unmotivated to deal with social or work tasks.

same A1 adjective

The word 'same' is used to describe things or people that are identical or not different from each other. It indicates that two or more things are exactly alike in every way or are the very same entity.

"We have the same birthday!"

cloud B2 adjective

Relating to services, software, or data storage provided over the internet rather than on a local computer or physical server. In modern technology, it describes a decentralized network of remote servers used to store and process information globally.

paper A1 noun

Paper is a thin material made from wood or cloth used for writing, printing, or drawing. It can also refer to a specific piece of writing, such as an essay for school or a daily newspaper.

"The paper is important."

size A1 noun

Size describes how big or small an object, person, or space is. In shopping, it specifically refers to the standard measurements used for clothing, shoes, and accessories to ensure a proper fit.

"The size is important."

sheet A1 noun

A large, thin, rectangular piece of cloth used on a bed to keep the sleeper comfortable and the mattress clean. It can also refer to a flat piece of paper or a thin layer of any material like metal or ice.

"The sheet is important."

light A1 adjective

Describes a space that has a lot of natural brightness or many windows. It also refers to colors that are pale or close to white rather than dark.

"This is very light."

half A1 noun

One of two equal parts that make up a whole. In the context of time, it specifically refers to thirty minutes or the midpoint of an hour.

"The half is important."

earth
universe
down
everything
shape
speed
doublings
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