In the parallelogram what angle is supplementary to bcd

I'm going to answer in statement proof form.

Statement                                                      |  Proof                                                

mANGLE(ABC) is congruent to mANGLE(ADC)      Properties of a Parallelograms

3(BCD)+(BCD)=180                                          Supplementary Property of Parallelograms

4(BCD) = 180                                                   Simplify

BCD=45                                                           Division property of Equality

180-45=ABC                                                     Properties of Supplementary Angles

135=ABC                                                          Simplify

135=ADC                                                          Transitive property of equality

false

step-by-step explanation:

4y - 6 + 4y^2 - 9

before simplifying this contains 4 terms

after simplifying

4y -15 + 4y^2

it contains 3 terms