If all of the diagonals are drawn from a vertex of a hexagon, how many triangles are formed? a. 2 b. 3 c.4 d.5

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c