Angles of any shape instantly

What are the inside angles of triangles? Rectangles? Pentagons? Hexagons...dodecahedrons? Any polygon you can think of? Work them out instantly in this fast math lesson. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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