Science

16 GIFs You Can 100% Look At In Maths Class

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The one time it’s actually productive to be reading BuzzFeed in school.

Here’s proof that Pythagoras’ theorem really works.

Here's proof that Pythagoras' theorem really works.

Pythagoras’ theorem says that the square of the hypotenuse (the side of the triangle opposite the right angle) is equal to the sum of the squares of the other two sides.

And look! Here you can see that squares of the two shorter sides are equal in area to a square of the longest side.

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And here’s a slightly longer explanation of why a² + b² = c².

And here's a slightly longer explanation of why a² + b² = c².

The hypotenuse – the longest side of the triangle – is c, and the other two sides are a and b. Watch the GIF to the end and you’ll be a Pythagorean genius.

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This is how pi works.

This is how pi works.

The circumference of a circle is pi multiplied by the diameter So if you roll out the circumference into a straight line, it’ll be pi diameters long. Voila!

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This is why the area of a circle is πr².

This is why the area of a circle is πr².

You know the circumference is 2πr (where r is the radius). If you cut up the circle and roll it out to a triangle, the base of that triangle has length 2πr and its height is r.

The area of a triangle is ½ x base x height, resulting in πr².

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Source: 16 GIFs You Can 100% Look At In Maths Class

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