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In geometry, a transformation is an operation that moves, flips, or changes a shape (called the preimage) to create a new shape (called the image). Write the mapping rule to describe this translation for Jack. Rotation 270° about the origin: Each x value becomes opposite of what it was. Jack describes a translation as point moving from (J(2, 6)) to (J(4,9)). In geometry, a transformation is an operation that moves, flips, or changes a shape to create a new shape. Rotation 180° about the origin: Each x and y value becomes opposite of what it was. Rotation 90° about the origin: Each y-value becomes opposite of what it was. Reflection across the line y=x: The x and y values switch places. Reflection across the y-axis: Each y-value stays the same and each y-value becomes opposite of what it was. Reflection across the x-axis: Each x-value stays the same and each y-value becomes opposite of what it was. Transformation Rules on the Coordinate Plane Translation: Each point moves a units in the x-direction and b units in the y-direction. It doesn’t take long but helps students to. This activity is intended to replace a lesson in which students are just given the rules. Today I am sharing a simple idea for discovering the algebraic rotation rules when transforming a figure on a coordinate plane about the origin. I can describe the effects of dilations, translations, rotations, and reflections on 2-D figures using coordinates. Using discovery in geometry leads to better understanding.
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I can identify scale factor of the dilation.I can define dilations as a reduction or enlargement of a figure.Examples, solutions, worksheets, videos, and lessons to help Grade 8 students learn how to describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.