Angle Post

This a picture of a carpenters diagram to cut the piece of 2x4 to the right angle. The inner angle of the wood is 140 degrees so the outside angle that he needs to cut would have to have an equal 180 degrees.

Jurek is a welder working on the construction of apedestrian bridge in Cold Lake,Alberta.He is welding together bridge railing.As a decorative element to the rail,Jurek will weld four metal strips on each side of the figure,from the middle of each of the fopur marked angles to the edge of the peice of metal in the center.a scale drawing of the plan is shown.Determine the meaure of each angle bisector of the angles A,B,C, and D.

Used the protractor to get the angles of a,b,c,and d then bisected the angles.