Question

A statement and portions of the flowchart proof of the statement are shown.

Answer 1

BAC and CAD are adjacent angles, because they share a common vertex (A) and a common side AC, (an no other common points but the points on side AC).


The 2 adjacent angles form a new larger angle (BAD), whose measure is the sum of the measures of the adjacent angles.


This is called the "Angle Addition Postulate"


Answer: A