Respuesta :

Answer:

see the attached figure to better understand the problem

we know that

the area of the triangle ABC is equal to the area of the triangle 1

The area of the triangle 1,2,3 and 4 is the area of a rectangle

The area of the rectangle is equal to

Find the area of the triangle 2

Find the area of the triangle 3

Find the area of the triangle 4

Find the area of the triangle ABC

therefore

the answer is

the area of the triangle ABC is equal to

Step-by-step explanation: