the "tomahawk" tool for angle trisection

line diagram drawing font sketch cartoon circle brand text wing map document presentation lighting iron vehicle tomahawk tool angle trisection vector tool division equal parts black white blade handle spike apex arc architecture carpenter#39aph39#s square center circle construction corner degrees diameter draftsman drawing education engineer geometry graphic editor graphics length line segment math measurement paper pen pencil perpendicular plane point precision radians radius ray semicircle shape side size straight tangent technique whatman