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Answer: DE is 2 Units
Step-by-step explanation
To determine the length of DE, you can use the following formula for finding a length within a line segment:
Length of DE = Length of CE - Length of CD
Given:
CE = 11
CD = 9
Now, apply the formula:
DE = CE - CD
DE = 11 - 9
DE = 2
So, the length of DE is 2 units.