3 years ago

NEED HELP ASAP 50 POINTS

Mathematics

2 answers:

Artist 52 [7]3 years ago

6 0

Answer:

120°

Step-by-step explanation:

Diagonal BD of a given rhombus is angle bisector of ∠ADC, so:

m∠ADB = m∠CDB

Substitute the values and solve for x:

4x - 12 = 3x + 6
4x - 3x = 6 + 12
x = 18

Find the value of ∠ADC:

m∠ADC = 2(4*18 - 12) = 120°

omeli [17]3 years ago

4 0

Answer:

Angle ADC = 7x - 6°

Step-by-step explanation:

4x - 12 + 3x + 6 = 7x - 6

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