Question

HELP? In the diagram, BC ∥ DE What is CE ? Enter your answer in the box.

Answer 1

Answer:

15 cm

Step-by-step explanation:

Thats what I put on my quiz, and got it( :

Answer 2

Since BC ∥ DE, we only apply thales theorem, it is

AB / AD =  AC / AE, so we can find directly AE , AB / AD =  AC / AE implies AB x AE  =  AC x AD and  AC= AB x AE  / AD= 12 x 3 /2=18
since AC= 18, and AC=AE+CE, so we can get CE= AC - AE=18-3=15
CE=15cm