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The first theorem of rays is great. But you have to understand the principle. That's important because there is more than one version of the theorem of rays. If you've understood this video, you'll understand why there are multiple ways. It's precisely these deviations that often lead to problems. That's why we're taking a closer look at it today. In the next video, we'll look at a deviation. ------------ Hi, I hope you enjoyed this video! Ideally, you even learned something or understood something better. Want to see more? Homepage: www.lehrer-schmidt.de Here you'll find all videos sorted by topic. You can find the right video more quickly there! Instagram @lehrerschmidt / lehrerschmidt You can also follow me here! Want to email me? [email protected] Have a question? Email me at [email protected] and put the hashtag in the subject line. Then I'll find the question more quickly! Channel membership You can do it if you want to do something good for me, but it's completely pointless. There really is no benefit to you! Okay, that's it! #lehrerschmidt