GEOMETRY: Deriavation Of Triangle

GEOMETRY

I'M GOING TO PROMOTE, I can't put the sub, I just use a notepad friend.

How are geometry formulas derived?

A = 1 / 2bh

where
b-base
h-height

Acute triangle area?
when you say acute triangle all sides are equal, it is pure 60 ° angle.

A = 1 / 2bh 👈 here we will get that

Let b = 1/2 (s) bkit ganun? divided in the middle

A = 1/2 {s) (1/2) (s)

thus, A = 1/4 (s ^ 2) when you use algebra.

Equilateral area,

Equilateral area means equilateral 2 long legs are equal but the base is not.

A = 1 / 2bh 👈 here we will take nyan again, area of ​​scalene triangle paps

discription of equilateral triangle.

A-area
a-slant
b-base
h-height

sol'n:
use phytagorean theorem, to get the height

h = squareroot (a ^ 2-b ^ 2) so,

A = 1 / 2b [squareroot (a ^ 2-b ^ 2)]