In parallelogram ABCD, m∠ADC = 60°.

What is m∠DCB?

___°

Question

Nicholas Becker

Mathematics

21 December, 00:31

In parallelogram ABCD, m∠ADC = 60°.

What is m∠DCB?

___°

+3

Answers (1)

Know the Answer?

River Nguyen · Answer 1

Answer: 120°

Step-by-step explanation:

Since it is a parallelogram, then opposite sides are parallel. Since ∠ADC is next to ∠DCB, they are supplementary angle (which means the sum of their angles is 180°).

∠ADC + ∠DCB = 180°

60 + ∠DCB = 180°

∠DCB = 120°

In parallelogram ABCD, m∠ADC = 60°.What is m∠DCB?___°

In parallelogram ABCD, m∠ADC = 60°.

What is m∠DCB?

___°