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Sum it up Angle Addition: Part 2
Applet: http://www.geogebratube.org/student/m96801 Teaching Notes mathbutler.wordpress.com
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Circles Part 1: Similarity Intuition
All circles are similar, right? Okay, maybe it’s not given. In fact, it needs to be proven. This proof is yet another that is so easily demonstrated with dynamic math tools (like desmos and geogebra...
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Circles Part 2: Angle Relationships
Once similarity intuition has been built with circles, we can start getting into more specific relationships with angles and segments. This post will look at using visual information from central...
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Satellites Spinning Round: Circles Part 3 (Tangents and Incircle)
Inspiration Have you ever wondered how far a satellite is from the planet? Sometimes people think about these objects flying through the sky and rotating around a planet. Such wonders have even...
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Segment Similarity: Circles Part 4
So this happens in geometry: Proportional Triangles: http://goo.gl/RDkMQo It relates back to dilations. Transformations Applet: http://ggbtu.be/m125888 The big idea: similar triangles have proportional...
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Systems of Expressions
Recently I read a post by Bob Lochel (low-shell). His stuff is great and he is one of the desmasters I’d turn to with any burning questions or wonderings. He brings to light some simple ideas that...
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