Angle sum in a triangle - Calculate missing angles (interior angles)

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Nachhilfe vom Lehrer

Published on May 12, 2024
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The sum of the angles in a triangle: In this video you will learn how to calculate the missing angle in a triangle if you only know 2 interior angles. At the end of the video you will see an easy-to-understand proof of why the 3 interior angles of a triangle always add up to 180°. Here you can find free worksheets on angles and triangles: https://www.nachhilfevomlehrer.de/mat... Here you can find more math videos from me: • Math And here you can find my videos specifically on geometry: • Geometry 00:00 Sum of the angles of a triangle 00:56 Calculating interior angles 02:15 Special feature: Isosceles triangles 03:16 Proof: Sum of interior angles = 180° 04:26 Free worksheets for practice

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