- 연습하기Mechanical wavesBacteria GrowthSpirograph-Epitrochoid Earth and MoonAnalog ClockThe Crazy Circle Illusion: How are these dots moving? GeoGebRubber Pencil IllusionGirl in the MirrorPythagorean Theorem Proof without WordsGeometry of a washing machineGershgorin circle theoremnine-point circleUnit CircleUnit Circle아폴리니우스의 원mixtilinear circleinversion of a circleCircle theoremscircle1원의 정의Escher Circle Limit 1 constructionconcentric circles and greater arkCircle Area (By Peeling!)reflection on a unit circleAnimation 226Animation 222G period Unit Circle Project Matilda ChoiCongruent Chords (I)Animation 218중심각과 호의 길이, 넓이 사이의 관계Unit Circle - exact valuesGoGeometry Action 16!strings into circles-circles tangents.세 점을 지나는 원의 방정식Seven Circles TheoremProperties of Tangents Drawn to Circles (A)두 점을 지름으로 하는 원의 방정식이차함수와 원과 타원9-Point Circle Action (Part 1)GoGeometry Action 9!Circle vs. Spherecosine 그래프 그리기tangent 그래프 그리기sine 그래프 그리기Animation 224GoGeometry Action 15!Congruent Chords Action (A)
