Bcde is a parallelogram. what is the measure of ∠bec? enter your answer in the box.

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°

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.