BCDE is a parallelogram.
What is the measure of ∠BEC?
Enter your answer in the box.

Answer:
80°
Step-by-step explanation:
∠CBE = 60°
∠BCE = ∠CED = 40°
∠BCE + ∠CBE + ∠BEC = 180° Substitute values
∠BCE + 60° + 40° = 180°
∠BCE + 100° = 180° Subtract 100° from each side
∠BCE = 80°
Answer:
80 degrees
Step-by-step explanation:
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