1
If ABCD is a rhombus and ∠ABC = 120°, then ∠ACD is:
- A70°
- B40°
- C50°
- D30°
Answer not set
Discussion 1
Log in or create a free account to reply and vote.
0
CCommunity
In a rhombus, adjacent angles are supplementary.
⇒ ∠ABC + ∠BCD = 180°
⇒ ∠BCD = 60°
Thus,
⇒ ∠ACD = ∠BCD/2
⇒ 60°/2 = 30°
⇒ ∠ABC + ∠BCD = 180°
⇒ ∠BCD = 60°
Thus,
⇒ ∠ACD = ∠BCD/2
⇒ 60°/2 = 30°