A. < ABC = 180°- <DBA
= 180°- 120°
= 60°
B. <ACB = 180°- (60°+55°)
= 180°- 115°
= 65°
C. <ACC ( mungkin ACG)= 180°- < ACB
= 180°- 65°
= 115°
D. < EBC = < DBA
= 120°
E. < DBE = < ABC
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A. < ABC = 180°- <DBA
= 180°- 120°
= 60°
B. <ACB = 180°- (60°+55°)
= 180°- 115°
= 65°
C. <ACC ( mungkin ACG)= 180°- < ACB
= 180°- 65°
= 115°
D. < EBC = < DBA
= 120°
E. < DBE = < ABC
= 60°