8th Grade Math PLC

8th Grade Math PLC

Unit 1:  Rigid Transformations and Congruence

Open Ended

Give a real-life example of a rotation?

Multiple Choice

Triangle ABH is rotated 90 clockwise about the origin. In order to find the coordinates of the image, what is the first thing you want to do?

• Write (x, y) -> (-y, x)

• Write (x, y) -> (y, -x)

• Write (x, y) -> (y, x)

• Write (x , y) -> (-y, -x)

Multiple Choice

Point R has been rotated 90 $\degree$ counterclockwise about the origin.  If the coordinates of R is (-2, 5), what are the coordinates of R'? 

• (5, -2)

• (2, -5)

• (-5, 2)

• (-5, -2)

Multiple Choice

Which transformation has taken place?

• 90 degrees clockwise

• 90 degrees counterclockwise

Multiple Choice

Which single transformation correctly maps T(0, 5) onto T'(5, 0)?

• 90 $\degree$  Rotation counterclockwise

• translation up

• reflection across the x-axis

• rotation 90 $\degree$   clockwise

Open Ended

Closing:

Discuss your thoughts about Quizizz.