20 cm 14 cm
12 cm
b
What is the base length, b, of one of the triangles?
O 3 cm
O 4 cm
O 6 cm
O 7 cm

can i get the link to the assignment?

step-by-step explanation:

594 square inches

step-by-step explanation:

vote !

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation:

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