Quadrilateral dcba is a parallelogram. find cb

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

#faazmessi

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

a is the right answer

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12