Tim Brzezinskiさんのイラストまとめ

Cyclic quadrilateral surprise! Source: @gogeometry .https://t.co/XF5cVO9ucc & https://t.co/uXVSA7z9zu @geogebra #MTBoS #ITeachMath #geometry

@MathTechCoach @geogebra This one’s kind of creepy looking.

1 cyclic quadrilateral + 4 perpendiculars = 😮? How to prove? 🤔 Source: @gogeometry. https://t.co/XF5cVNRTkE @geogebra #MTBoS #ITeachMath #geometry #math #maths #proof

1 triangle + 1 cevian + 3 circumcenters = 4 concyclic points! How to prove? 🤔 Source: @gogeometry. https://t.co/rRs3VoE0Y1 #MTBoS #ITeachMath #math #maths #geometry #proof

1 triangle + 2 parallel lines + 4 circumcenters = 😮? How to prove? Source: @gogeometry. https://t.co/xC4Sd6TCky @geogebra #MTBoS #ITeachMath #math #maths #EdTech #geometry #proof #MathEdTech #FigureThat #ProofWithoutWords #HSMath #CollegeMath

#Circle: Thales' Action + Sequel Theorem: How can we formally prove the sequel part? 🤔 Source: @gogeometry. https://t.co/Thg07Nkls2 @geogebra #MTBoS #ITeachMath #math #maths #EdTech #geometry #proof #FigureThat #MathEd #MathEdTech

Added a few more characters (PigPen, Woodstock, & Sally) to this year's @Desmos holiday Peanuts dance. 🙂 https://t.co/bf8fDV4TV7 @madewithDesmos @AlgebraDesmos @desmosbank #MTBoS #ITeachMath #math #maths #EdTech #Desmos #FunWithDesmos

What #geometry theorem(s) are dynamically illustrated here? Points moveable: https://t.co/l58IweqxMs. @geogebra #MTBoS #ITeachMath #math #maths #proof #EdTech #MathEd #HSMath

Easy to see. Yet how easy to prove? 🤔(Source: @gogeometry). https://t.co/zKf5dmJeay @geogebra #MTBoS #ITeachMath #geometry #proof #HSMath #CollegeMath #circle #tangent #EdTech #HSMath #CollegeMath

Circles shown are internally tangent. How can we prove the 2 blue angles are always congruent? 🤔(Source: @gogeometry). Explore here: https://t.co/u2Ifu0Hrt2. @geogebra #geometry #math #maths #MTBoS #ITeachMath #EdTech #proof #FigureThat