[8] Maths

 [artykuł przeniesiony z poprzedniego adresu]

 Dzisiaj troszkę słówek z zakresu matematyki. Nie jest to na pewno mój ulubiony przedmiot, ale za to bardzo w życiu przydatny. Zaczniemy od czegoś prostego...







Everybody should know what percentages are. Obviously, this word is really simialar to Polish version so it isn't hard. Any way, percentages are very handy way of writing fractions. I hope all of you know what it is. No? I can explain it.

  

This is fraction called "One third".
The number above (1) is a denominator.
And the number below (3) is a numerator.

We devide fractions into two separate gropus.
Firstly, when the number above is smaller we call it proper fraction.
Secondly, when the number above is bigger we call it inproper fraction.

There is another type of fraction called mixed number. It is when the fraction is made from whole number and fraction. We can change inproper fraction into mixed number, like that:
4/3 = 1 and  1/3

Ok, so I think these informations are the most basic and important.

Next thing I want to show you is an angle.
In geometry, the angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

 

Types of angles:
-> Right angle (the angle equal to 90°)
-> Reflex angle (when the angle is bigger than 180°)
-> Full angle (when the angle is equal to 360°)
-> Obtuse angles (when the angle is between 90° and 180°)
-> Acute angles (when the angle is below 90°)
-> Reflex angle ( when the angle is between 180° and 360°)

Of course, there is more of them but these are the most important.

Ok, that's it on today.
I hope it was not as horrible as I thought it is.