Proof That Only 3 Regular Polygons Tessellate

Tessellation is the tiling a surface (in this case a flat surface) without gaps and overlaps. This concept is very important since many of the floors and walls are tiled nowadays. But tessellation is a lot more than that. It actually obeys the law of mathematics particularly angles. The plane can be tiled with just […]
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Proof that -a = -1(a)

In the elementary school and high school mathematics, we are usually treating some statements as facts (or axioms). In reality, many of these statements are actually theorems. This means that if you want to go deeper, it is good to read the proofs of these theorems. Note that all theorems in mathematics, even the most obvious, have their mathematical […]
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