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Standards/Math/Massachusetts/8.G.A.3

8.G.A.3

8.G.A Understand congruence and similarity using physical models, transparencies, or geometry software.
8.G.A.1
8.G.A.2
8.G.A.3
8.G.A.4
8.G.A.5

Describe the effects of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.

Example Problems
The graph of y=∣x∣ is shifted to the left by 5 units.

What is the equation of the new graph?
Point Q'(2,5) is the image of Q(−1,1) under a translation.
What was the translation?
Point B′(6,2) is the image of B(1,−1) under a translation.
What was the translation?
Khan Academy Resources
Translations reviewRotations reviewReflections reviewReflect shapesDilations: scale factorDetermine rotations (basic)Translate pointsRotate points (basic)Dilate trianglesDilate pointsReflect pointsRotate pointsDetermine reflectionsDetermine translationsTranslate shapesDilations and propertiesDetermine rotationsSide lengths after dilationDilations: scale factor
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