What is the equation of a circle centered at the origin with radius 15

An angle that measures between 90 and 180° is called a(,

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

Answer pls man im trying to get out of summer school