CLASS-7
EQUILATERAL TRIANGLE

EQUILATERAL TRIANGLE -

An equilateral triangle is a special type of triangle where all three sides are of equal length, and all three interior angles are equal to 60°. Here are its key properties:

• Equal sides:- All three sides are the same length.
• Equal angles:- Each of the three angles is 60°, making it an acute triangle.
• Symmetry:- The equilateral triangle has three axes of symmetry, one for each vertex.
• Area formula:- The area A of an equilateral triangle with side length a is given by:-

                      √3

              A = ------- a²

                       4

• Height formula:- 

                                                          √3

       The height hhh can be calculated as:-  h = ------- a

                                                           2

The equilateral triangle is also a regular polygon since all its sides and angles are equal.