Respuesta :

im pretty sure its 49%! im not sure all the way but that looks reasonable!!

Answer:

Angle ABD is 39

Step-by-step explanation:

Angle ABC is a right angle. Therefore, it's 90 degrees. The divided it into 2 section, one of which is 51 degrees. To find ABD, which is the other section, just subtract 90-51. (find the difference)

90-51=39

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