To produce a reflection, or mirror image, you need to specify a line of reflection. when mirroring objects on a plane, a line of reflection is represented by a straight line. move polygon abcd around the coordinate plane, and describe the three lines of reflection that you see.

“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 .