IM 8.1.5 Lesson: Coordinate Moves
Select all of the translations that take Triangle T to Triangle U. There may be more than one correct answer.
Five points are plotted on the coordinate plane.
If the point were reflected using the -axis as the line of reflection, what would be coordinates of the image? What about ? ? Explain how you know.
The point R has coordinates (3,2).
Without graphing, predict the coordinates of the image of point if point were reflected using the -axis as the line of reflection.
Check your answer by finding the image of R on the graph. Label the image of point R as R' using the Text or Pen tool.
What are the coordinates of ?
Suppose you reflect a point using the -axis as line of reflection. How would you describe its image?
Apply each of the following transformations to segment AB using the applet that follows. Use the Pen tool to record the coordinates.
In the applet below, rotate segment 90 degrees counterclockwise around center by moving the slider marked 0 degrees. The image of is named . What are the coordinates of ?
In the applet below, rotate segment 90 degrees counterclockwise around center by moving the slider marked 0 degrees. The image of is named . What are the coordinates of ?
In the applet below, rotate segment 90 degrees clockwise around by moving the slider marked 0 degrees. The image of is named and the image of is named . What are the coordinates of and ?
Compare the two 90-degree counterclockwise rotations of segment . What is the same about the images of these rotations? What is different?
Suppose and are line segments of the same length. Describe a sequence of transformations that moves to .