Question

in polygon Octagon find total number of triangles and calculate the sum of its interior angles using the formula​

Answer 1

Step-by-step explanation:

1 ) The number of triangles in a polygon is two(2) less then the no of sides.

i.e Octagon = 8 sides

Therefore, no of triangles = 8-2 = 6

2 ) Sum of interior angles = ( n - 2 ) x 180°

Therefore, ( 8 - 2 ) x 180°

=> 6 x 180°

=> 1080°