Mark M. answered 09/18/19
Tutor
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Mathematics Teacher - NCLB Highly Qualified
Draw and label a diagram!!
m∠ECD + m∠BCE = m∠BCE
m∠ECD = 5 m∠BCE
5 m∠BCE + m∠BCE = m∠BCD
5 m∠BCE = m∠BCE
5 m∠BCE = 162°
Can you complete and answer?