G.GCO.3
Describe rotations and reflections that carry a regular polygon onto itself and identify types of symmetry of polygons, including line, point, rotational, and self-congruence, and use symmetry to analyze mathematical situations.
Khan Academy ResourcesProperties of translationsRotating shapes about the origin by multiples of 90°Translating shapesRotations introDetermining rotationsReflecting shapesTranslations introDetermining translationsPrecisely defining rotationsMapping shapesDetermine reflections (advanced)Reflect shapesRotate shapesCongruence & transformationsTranslate pointsFind measures using rigid transformationsReflective symmetry of 2D shapesDefining transformationsDilations: centerIdentify transformations Reflect pointsRotate pointsRotational symmetry of 2D shapesRigid transformations: preserved propertiesDetermine reflectionsDetermine translationsTranslate shapesDetermine rotationsTranslating shapesRotating pointsReflecting shapes: diagonal line of reflectionTranslating pointsFinding a quadrilateral from its symmetries (example 2)Reflecting pointsFinding a quadrilateral from its symmetriesDetermining reflections (advanced)Determining translationsIdentifying transformationsMapping shapesTranslation challenge problemDefining transformationsNon-congruent shapes & transformationsDetermining rotationsIntro to rotational symmetryIdentifying type of transformationDilating shapes: shrinkingRigid transformations introFinding measures using rigid transformationsDetermining reflectionsDilations: centerReflecting shapesRotating shapesCongruent shapes & transformations

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