A 30-ft board is cut into two parts such that the shorter piece is three more than one-half the longer piece. How long is each piece?

“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 .

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