Question

plZ answer my question.. I will mark your answer Brainleist.. thank you​

Answer 1

Answer:

A triangle needs 3 points.

And polygon of 8 sides has 8 angular points.

Hence, number of triangle formed,

=10

   C

       3

= 10

Step-by-step explanation:

Answer 2

Decagon has 10 sides so draw a 10 sided fig n u will see that there are 10 triangles formed