2. A function can be classified as one-to-one correspondence, one-to-many correspondence and many-to-one correspondence.

C. i possibility the answer to this

“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 .