Geometry Similar Transformations

The result of a transformation.

• Pre-image

• Image

A turn is also called a ___________.

• Translation

• Reflection

• Rotation

Translations, reflections and rotations are all known as ________________________.

• Geometry

• Transformations

• Congruent

Which transformation will result in being similar to the original figure but has a larger area?

• Dilation with scale factor of 2

• Dilation with scale factor of 1

• Dilation with scale factor of .5

• Translation 

A triangle is dilated by a scale factor of ⅓ to produce a new triangle. Which of the following best describes the relationship between the perimeter of the original triangle compared to the perimeter of the new triangle?

• The perimeter of the new triangle is ⅓ that of the original triangle

• The perimeter of the new triangle is 3 times that of the original triangle.

• The perimeter of the new triangle is 1/9 that of the original triangle.

• The perimeter of the new triangle is 9 times that of the original triangle

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

If you were to rotate ABCD 180°  about the origin, what would the coordinate of A' be?

• (-5, 5)

• (-3, -5)

• (-5, 3)

• (-3, 3)

Describe the transformation.

• 90º counterclockwise rotation

• 180º counterclockwise rotation

• 90º clockwise rotation

• reflection across the origin

A triangle has vertices with coordinates (2,0), (3, -1) and (-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image?

• (5,3), (6,2), (1,-2)

• (6,0), (9,-3), (-6,-15)

• (2/3,0), (1,-1/3), (-2/3,-5/3)

• (-1,-3), (0,-4), (-5,-8)

Reflect (3,5) over the x-axis.

• (2,2)

• (3,-5)

• (-3,-5)

• (-3,5)