4.1-4.2 Lesson Check

Organize the types of transformations into the two categories.

Groups:

(a) Rigid

,

(b) Not Rigid

• Dilation

• Reflection

• Rotation

• Translation

Answer explanation

Refer to your Unit 4 Packet :)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

For a transformation, the original shape is called the ​ (a)  

• Pre-Image
• Image
• the "OG"

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A translation...

(select all that apply)

• Can move a shape left or right

• Can move a shape up or down

• Flips the shape over a line of symmetry

• Is a rigid transformation

• Enlarges or Condenses a shape

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Quadrilateral VXWY is translated to create quadrilateral V'X'W'Y.

Write the coordinate rule.

Tags

CCSS.HSG.CO.A.2

Categorize each reflection.

Groups:

(a) Reflection over y = x

,

(b) Reflection over y-axis

,

(c) Reflection over y = -x

,

(d) Reflection over y = -2

• 
• 
• 
• 

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Calvin is going to reflect quadrilateral JKLM over x = 1. Click on the point that would represent J'.

Answer explanation

The line x = 1 is a vertical line of reflection, as shown. Count how far J is from the line of reflection, and then repeat on the other side of the line.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Nash plans to reflect triangle DEF over x = 2. Click on the point that would represent F'.

Answer explanation

The vertical line x = 2 is the line of symmetry. Reflect each point across the dotted line.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Match each coordinate rule with the type of reflection.

• Over the line y = x

• Over the x-axis

• No Rule, just graph and count.

• Over the line x = 3

• Over the line y = -x

• Over the y-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5