Given all four angles of a quadrilateral $ABCD$, the fact that $AC$ bisects angle $A$, and that angles $A$ and $B$ are equal, how do we find $ACD$, $ADB$, $ABD$, $CBD$? Better yet, is there a formula for each of those angles in terms of angles $A, B, C, D$?
Quadrilateral- other angles
4
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geometry