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FCE=360-334=26°
FCD+CEF+CFE=180
26+112+CFE=180
CFE=180-138=42
DFG=CFE=42°
DFC=EFG. ( Alternate angle)
42+42+2a
2a=180-84
a=48
AGB=180-65-50
AGB=65°
AGB=b=65. (alternate angle)
FCE=360-334=26°
FCD+CEF+CFE=180
26+112+CFE=180
CFE=180-138=42
DFG=CFE=42°
DFC=EFG. ( Alternate angle)
42+42+2a
2a=180-84
a=48
AGB=180-65-50
AGB=65°
AGB=b=65. (alternate angle)
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