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More Lessons for Grade 9

Math Worksheets

Examples, solutions, videos, worksheets, games and activities to help Geometry students learn about transformations on the coordinate plane. In this lesson, we will look at reflection.

**What is Reflection in Geometry?**

A reflection is an isometry, which means the original and image are congruent, that can be described as a "flip".

To perform a geometry reflection, a line of reflection is needed; the resulting orientation of the two figures are opposite. Corresponding parts of the figures are the same distance from the line of reflection.

Ordered pair rules reflect over the x-axis: (x, -y), y-axis: (-x, y), line y = x: (y, x).

Math Reflection On Coordinate Plane

Describing reflections of simple shapes in the plane, and how to draw them.

More Lessons for Grade 9

Math Worksheets

Examples, solutions, videos, worksheets, games and activities to help Geometry students learn about transformations on the coordinate plane. In this lesson, we will look at reflection.

A reflection is an isometry, which means the original and image are congruent, that can be described as a "flip".

To perform a geometry reflection, a line of reflection is needed; the resulting orientation of the two figures are opposite. Corresponding parts of the figures are the same distance from the line of reflection.

Ordered pair rules reflect over the x-axis: (x, -y), y-axis: (-x, y), line y = x: (y, x).

The following diagram shows how to reflect points and figures on the coordinate plane. Examples shown are reflect across the x-axis, reflect across the y-axis, reflect across the line y = x. Scroll down the page for more examples and solutions on reflection in the coordinate plane.

Geometry ReflectionMath Reflection On Coordinate Plane

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