Transformations

Translations, reflections and rotations are all known as ________________________.

• Geometry
• Transformations
• Congruent

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Write a rule for the translation.

•  (x -1, y  + 2)
•  (x -2, y  + 1)
•  (x +2, y  - 1)
• (x +1, y  -  2)

Tags

CCSS.HSG.CO.A.2

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The rule for reflection over the y-axis is

(x, y) --> _

• (-x, y)

• (x, -y)

• (y, x)

• (-y, x)

The rule for rotation of 270 degrees is  
(x, y) --> _

• (y, x)
• (-y, x)
• (y, -x)
• (x, -y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The rule for rotation of 90 degrees is

(x, y) --> _

• (y, -x)

• (-y, x)

• (x, -y)

• (-x, y)

The Point of rotation... 

• Is the point that does not move
• Move a little
• Is always the origin
• Is never the origin

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Triangle A is rotated 270° counterclockwise with the origin as the center of rotation to create a new figure. Which triangle shows the new location?

• A
• B
• C
• D

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What are the coordinates when reflected over the y axis?

(5,4), (-3,5), (9,6), (-7,7)

• (5,-4), (-3,-5), (9,-6), (-7,-7)

• (-5,4), (3,5), (-9,6), (7,7)

• (4,5), (5,-3), (6,9), (7,-7)

• (-5,-4), (3,-5), (-9,-6), (7,-7)

What is Dilation?

• Dilation means to enlarge or reduce
• Dilation means to reflect on something
• Dilation means to like something
• Dilation means to make something different by making it smaller

Tags

CCSS.8.G.A.3