geometry
posted by bleach .
I can't figure out this problem, help would be much appreciated! Suppose line BC bisects angle ABE, and D is the interior of angle ABC. If mangle CBD=28 degrees, and mangle ABE=136 degrees, find mABD.

geometry 
Steve
Since BC bisects ∢ABE , m∢ABC = 68°
so, m∢ABD = 68  28 = 40°
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