Final answer:
Insufficient information to complete the flowchart proof. The question lacks the necessary details, including the flowchart or specific geometric properties to answer it correctly.
Step-by-step explanation:
I apologize, but based on the question provided, there's insufficient information to complete a flowchart proof. A flowchart proof typically requires a sequence of logical statements and reasons forming an argument that proves a particular geometric theorem or property. To assist in answering the given question, please provide the flowchart or the specific geometric details involved such as the properties of segment bisectors or any given measurements or angles in diagram relating to start overline, b, d, end overline bd and start overline, a, c, end overline ac.