Transformations on the Plane

Identify the transformation from ABCD to A'B'C'D'.

• Translation

• Reflection across the x-axis

• Reflection across the y-axis

• 90^o counter clockwise rotation

Identify the transformation from ABC to A'B'C'.

• (x+8, y+4)

• (x-8, y-4)

• (x+4, y+8)

• (x-4, y-8)

Identify the transformation from ABC to A'B'C'.

• 90^o clockwise rotation

• 90^o counter clockwise rotation

• Reflection across the y-axis

• Reflection across the x-axis

Identify the transformation from ABC to A'B'C'.

• Translation

• 90^o clockwise rotation

• 90^o counterclockwise rotation

• Reflection across the x-axis

Reflections over the x-axis change the ____-__________.

• y-coordinate

• x-coordinate

The mapping, or movement, of all points

of a figure in a plane according to a

common operation is called a......?

A figure is graphed on a coordinate plane with (x, y) representing the location of a point on the figure. The figure is transformed using the rule (x, y) --> (ax, ay). Which statement is true?

• If a is greater than 1, the image of the figure is congruent to the figure.

• If a is between 0 and 1, the image of the figure is congruent to the figure.

• If a is greater than 1, the image of the figure is smaller than the figure.

• If a is between 0 and 1, the image of the figure is smaller than the figure.

A figure is graphed on a coordinate plane with (x, y) representing the location of a point on the figure. The figure is transformed using the rule (x, y) --> (ax, ay). Which statement is true?

• If a is greater than 1, the image of the figure is congruent to the figure.

• If a is between 0 and 1, the image of the figure is congruent to the figure.

• If a is greater than 1, the image of the figure is smaller than the figure.

• If a is between 0 and 1, the image of the figure is smaller than the figure.

When translating a figure on a coordinate plane, which coordinate is affected by movement left and right?

• The x-coordinate

• The y-coordinate

• Neither

The description of a transformation on a coordinate plane is shown. "A trapezoid is dilated by a scale factor of 13 with the origin as the center of dilation. Then, it is reflected across the 𝑥-axis." Which statement is true?

• Which statement is true?

  A. Transformation preserves only distance.

• B. Transformation preserves only angle measure.

• C. Transformation preserves neither distance nor angle measure.

• D. Transformation preserves both distance and angle measure.