Answer:
13
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Diagonal BD of a given rhombus is angle bisector of ∠ADC, so:</u>
<u>Substitute the values and solve for x:</u>
- 4x - 12 = 3x + 6
- 4x - 3x = 6 + 12
- x = 18
<u>Find the value of ∠ADC:</u>
- m∠ADC = 2(4*18 - 12) = 120°