In the accompanying diagram, tangent PA and secant PBC are drawn to circle O from point P. If
the measure of arc AC = 80° and the measure of
arc AB
= 60°, what is the m2P?
A. 5
B. 10
C. 70
D.20

The scale factor of what ?

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .