A cell phone plan costs $200 to start. Then there is a $50 charge each month.

I am just here to close the answer column because the other person who answered is correct.

“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 .