Table of Contents:
Area of triangle: [ l×b /2 ]
Perimeter of Triangle: [ (a + b + c) ]
Area of Equilateral Triangle: [ (Sqrt (3)/4)×(side)² ]
Area of Triangle SAS (2sides & opposite angle): [ ½×a×b×SinC ]
l = length
a,b, and c = sides of the triangle
A triangle is a plane figure with straight sides and three angles. All of the interior angles add up to 180 degrees. A triangle is a polygon with three corners or vertices and three sides or edges which are line segments. A triangle with vertices A, B, and C is denoted ABC.
A triangle is a three-sided polygon consisting of three line segments linked end-to-end.
The interior angles of triangle always add up to 180 degrees
The exterior angles of triangle always add up to 360 degrees
There are seven types of triangles:
Calculate the area of a triangle with the given length as 3 and breadth as 4 cm.
Area = [ l×b /2 ]= (3*4/2) = 12/2 = 6
Calculate the Perimeter of triangle with the given sides as 3, 4 and 5 cm
Perimeter = a+b+c = 3+4+5 = 12
Calculate the area of an equilateral triangle with the given side length as 4 cm
Area = [ (Sqrt (3)/4)×(side)² ] = [ (sqrt(3)/4 *(4)2 ] = 1.73/4 *16 = 0.4325 *16 = 6.92