Respuesta :

sqdancefan

Answer:

  AC = 55°

Step-by-step explanation:

In this geometry, arcs AC and BD have the same measure. The sum of the parts of arc CD will total the measure of CD.

  AC + AB + BD = CD

  2AC +80 = 170

  AC = 110/2 = 55

The measure of arc AC is 55°.

tmendez31

Answer:

AC = 55°

Step-by-step explanation:

because the measure is part of CD. Hope this helps!