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http://www.formelfabrik.de In this video I explain a problem on the topic of the ray theorem. The length of two beams is to be found in a half-timbered house. ---------------------------------------------------- All videos are part of playlists on topics from your maths lessons. You can find all playlists here / view_all_playlists Use the playlists to learn. All videos are structured the same. You see the problem and now have the option of pressing pause and solving the problem yourself. If you get stuck, watch a part of my calculation. If it is too easy for you, then skip the film. The important thing is that you are independent and active. If you come across an obstacle, then be happy. It is your chance to learn something!