What is another way to say 345 centimeters? 345 mm 345 cm 34.5 dl 345 cg (b? right? )

Yes.
345 centimeters and 345 cm are the same.

“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 .