In figure angle BAC= 40 degree, BC=AC and CD= BD. Find angle ABD and angle BDC
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BAC=40
BC=AC
ABC=40
BCA=180-BAC+ABC
BCA=100
BCD=180-BCA
BCD=80
CD=BD
BCD=DBC
DBC=80
ABD=ABC+DBC
ABD=120
BDC=180-BCD+DBC
BDC=20
ABD=120&BDC=20
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