Our comprehensive **Triangle Calculator** helps you quickly find the **area**, **perimeter**, and all **angles** of any triangle. Whether you're working with a right, equilateral, isosceles, or scalene triangle, just input the three side lengths (SSS) to get accurate geometry solutions instantly. Perfect for students, engineers, and DIY enthusiasts. Simplify your calculations now!
Formula:
Area (Heron's Formula)
A = √s(s-a)(s-b)(s-c)
Where s is the semi-perimeter: s = (a+b+c)/2
Perimeter
P = a + b + c
Angles (Law of Cosines)
cos(A) = (b² + c² - a²) / (2bc)
cos(B) = (a² + c² - b²) / (2ac)
cos(C) = (a² + b² - c²) / (2ab)