Respuesta :

leninkhatri

Answer:

123

Step-by-step explanation:

180-57 ( cointerior angle because opposite angle are parallel )

=123

plz make me brainliest

Hrishii

Answer:

123°

Step-by-step explanation:

[tex] m\angle CDA +m\angle BCD = 180\degree [/tex] (Adjacent angles of a parallelogram)

[tex] 57\degree +m\angle BCD = 180\degree [/tex]

[tex]m\angle BCD = 180\degree - 57\degree [/tex]

[tex]m\angle BCD = 123\degree [/tex]