Given segment CE and point D that lies on CE, find CE if CD=10 and DE=11.

CE= ____________

Did you draw a picture? If so, it should be clear that

CE = CD+DE = 21

To find the length of CE, you need to add the lengths of CD and DE.

CD = 10
DE = 11

CE = CD + DE

CE = 10 + 11

CE = 21

Therefore, CE = 21.

To find the length of segment CE, we need to add the lengths of the two smaller segments, CD and DE.

CD = 10
DE = 11

To find the length of the whole segment CE, we simply add CD and DE:

CE = CD + DE = 10 + 11 = 21

Therefore, the length of segment CE is 21 units.