Use the figure to answer the question.
D
B
4.21
Allison drew a map of where she and her friends live. Allison's house is at point A, and
her friends live at points B, C, and D. She only wrote some of the distances, in blocks,
on the map. Also, AD is the perpendicular bisector of BC Allison wants to know
the distance between her house and point C.
What is the measure of AC? [blank]