Plz help me! Brainlist will be chosen! #2

Issof claims that the scale factor is 1/2. which statement about his claim is correct

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m

Math i have no idea how to do a and b