Basics of Transformations (Handout & Homework)

To transform a shape or figure means to ​ (a)   it.

• change
• complete
• correct

The figure before a transformation is called the ​ (a)   , or the original figure. After a transformation, the new figure is called the ​ (b)  

• pre-image
• image.
• pre-figure
• post-figure
• 1st picture
• 2nd picture

If the pre-image were labeled A, the image would then be labeled A', pronounced "A ​ (a)   "

• prime
• post
• primary
• position

Match the following the transformation to its key word

• Turn

• Dilation

• Flip

• Translation

• Slide

• Reflection

• Enlarge / Reduce

• Rotation

​ (a)   refers to whether the pre-image and image have the same size and shape.

• Congruence
• Similarity
• Orientation of the Figure
• Orientation of the Vertices

refers to whether the pre-image and image are facing the same direction on the coordinate plane

• Orientation of the Figure

• Orientation of the Vertices

refers to the order in which the vertices are labeled, clockwise or counterclockwise.

• Orientation of the Figure

• Orientation of the Vertices

Determine if the statement is true or false.

• True

• False

Answer explanation

The answer is false because the triangle in quadrant III (lower left) is the pre-image. The triangle in quadrant I (upper right) is the image and represented as J' (J prime), K', and L'

Determine if the statement is true or false.

• True

• False

Answer explanation

The answer is true. Congruence preserves the shape and size.

Determine if the statement is true or false.

• True

• False

Answer explanation

The answer is false. The original figure (pre-image) is represented by just a letter. The new figure (image) is represented with prime notations (an apostrophe).