Mierzenie kątów - Matematyka Szkoła Podstawowa i Gimnazjum

In this video, I show how to measure angles using a protractor, I teach how to recognize when to use the left scale and when to use the right one, I present how to determine the measure of an angle based on reading and graphical representation, I show how to classify angles (acute, right, obtuse, straight, reflex, full) according to their measure, I explain how to use the fact that angles around a point add up to 360 degrees to calculate the measure of a supplementary angle, and I show how to measure reflex angles by subtracting the inner angle from 360 degrees. Contents: 1. Naming angles and letter notation 2. Structure of the protractor and the two measurement scales 3. Measuring angle alpha using the right-hand scale 4. Measuring angle BCD using the left-hand scale 5. Recognizing types of angles based on their measure 6. The sum of angles around a point equals 360 degrees 7. Calculating a supplementary angle when one angle is known 8. Reverse task – calculating an angle from a given sum 9. Measuring a reflex angle by completing to 360 degrees 10. Technique for measuring a reflex angle using a protractor CONTINUATION OF THIS VIDEO here: [   • Dokończenie filmu p.t. Mierzenie kątów  ](   • Dokończenie filmu p.t. Mierzenie kątów  ) Find more on the playlists: [   • GEOMETRIA NA PŁASZCZYŹNIE  ](   • GEOMETRIA NA PŁASZCZYŹNIE  ) and [   • KONSTRUKCJE GEOMETRYCZNE  ](   • KONSTRUKCJE GEOMETRYCZNE  ) EASY ACCESS to all my math lessons at my website: [www.matmagwiazdy.pl](http://www.matmagwiazdy.pl) On this channel, you will find a complete course – 100% of the lessons – in Mathematics for Primary School, High School, and Technical School. Good luck :) Tomasz D. Gwiazda CHAPTERS 00:00 Introduction 00:48 How to measure angles using a protractor 05:28 Recognizing types of angles using a protractor 06:22 Typical exercises with angles 10:07 Measuring reflex angles