More Lessons for Grade 9 Math
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 how to identify the different types of transformations.
Learn to identify transformations of figures.
A. Identify the transformation. Then use arrow notation to describe the transformation.
B. A figure has vertices at A(1,-1), B(2,3) and C(4,-2). After a transformation, the image of the figure has vertices at A'(-1,-1), B'(-2,3) and C'(-4,-2). Draw the preimage and image. Then identify the transformation.
C. Find the coordinates for the image of triangle ABC after translation (x,y) → (x+2,y-1). Draw the image.
Identify Combined Transformations
How to identify and create sequences of transformations between two congruent or similar shapes on a coordinate plane?
Preferred Method to Translate Figures:
Step 1: Reflect/Rotate the shape into the correct position (if needed).
Step 2: Resize(Dilate) the shape (if needed).
Step 3: Translate to the correct location (if needed)
Identify the combined transformations from the original to the final image, and tell whether the figures are similar or congruent.
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