L-23 Quick Check Day 1 (8.10A/B/C) with spiral 1/18/2023

Point C (-5, 4) is reflected over the x-axis. What are the coordinates of C'? 

• (5, 4)
• (-5, -4)
• (5, -4)
• (-5, 4) 

Tags

8.10A

8.10B

8.10C

Reflections

the original figure prior to a transformation

• pre-image

• quadrilateral

• triangle

• image

Determine how to translate triangle A'B'C' to triangle ABC.

• (x+2, y-5)
• (x+2, y-9)
• (x-2, y-9)

Tags

8.10A

8.10B

8.10C

Translations

A figure is reflected across the y-axis to create a new figure. Which rules describes this transformation?

• A. (x, y) --> (-x, y)

• B. (x, y) --> (x, -y)

• C. (x, y) --> (-x, -y)

• D. (x, y) --> (y, x)

Tags

8.10A

8.10B

8.10C

Reflections

What is the Algebraic Notation for this Reflection?

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

Tags

8.10A

8.10B

8.10C

Reflections

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

Where would A' be if you translated A 3 units to the right and 4 units down?

• (-4, 4)
• (-1, 0)
• (0, -1)

Tags

8.10A

8.10B

8.10C

Translations

What does a translation do to an image?

• Turns it 90* clockwise
• Mirrors it
• Shrinks it
• Slides it

What is a reflection?

• When you turn an object around a point.
• When you slide an object form one place to another.
• When you flip or mirror an object across an axis.

• When you resize an object.

What does "preserve congruency" mean?

• Same size and shape

• points in the same order

• same angles sizes

• same type of transformation

• identify the algebraic rule