If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed?

eleven triangles

Step-by-step explanation:

A polygon is such that when all diagonals from one vertex are drawn, eleven triangles are formed.

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2