Learn Triangles

calculate the Area

Area of right angled triangle(base and Height known)
Area of Equilateral triangle (all side of must be equal)
Area of triangle(With all 3 sides having different Measures)
Area of triangle (with 2 sides and 1 angle known)

Area of a right angled triangle

The formula to calculate the area of right angled triangle is

Formula: 1/2 x base x height

Base

Height

Area of an equilateral triangle

The formula to calculate the area of equilateral triangle is

Formula: (√3)/4 × side 2

Area of a triangle (with 3 different sides)

Area of triangle with 3 sides of different measures can be found using Heron's formula:

Formula: √( s(s-a)(s-b)(s-c) )where , s is semi-perimeter of the triangle : s = (a+b+c) / 2

Area of a triangle (with 2 sides and one angle known)

Area of triangle with 2 sides and an angle included between them known can be found by:

Formula: Area (∆ABC) = ½ bc sin A where , b & c are sides of a triangle and ∠A is an angle between them.