Respuesta :

Answer:

14 i think

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

  1. If B is the midpoint of A and C, and BC (half of AC) is 6, then AB must be equal to BC.
  2. So, AB must be 6 as well.
  3. AB + BC = 6 + 6 = 12
  4. Find the remaining space on the figure (CD): 20 - 12 = 8

I hope this helps!