SOLUTION: I was just wondering if you could help me out with this problem? "ABCD is a parallelogram. If angle CDA=55, then angle BCD=__________?" I know that inside interrior angles ar

Algebra ->  Formulas -> SOLUTION: I was just wondering if you could help me out with this problem? "ABCD is a parallelogram. If angle CDA=55, then angle BCD=__________?" I know that inside interrior angles ar      Log On


   



Question 392836: I was just wondering if you could help me out with this problem?
"ABCD is a parallelogram. If angle CDA=55, then angle BCD=__________?"
I know that inside interrior angles are congruent, but is that something that is used for this equation? If not then could you please explain to me how this proplem would be solved? Thanks. :D

Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
In a parallelogram, each pair of consecutive angles adds up to 180 degrees. Since CDA and BCD are consecutive angles, then angle BCD = 180 - 55, or 125 degrees.