Congruence Orientation

A dilations affect on a shape is best described as.

• The image maintains the preimage's orientation only

• The image maintains the preimage's congruence only

• The image maintains the preimage's orientation & congruence

• The image doesn't maintain the preimage's orientation or congruence

A translations affect on a shape is best described as.

• The image maintains the preimage's orientation only

• The image maintains the preimage's congruence only

• The image maintains the preimage's orientation & congruence

• The image doesn't maintain the preimage's orientation or congruence

A reflections affect on a shape is best described as.

• The image maintains the preimage's orientation only

• The image maintains the preimage's congruence only

• The image maintains the preimage's orientation & congruence

• The image doesn't maintain the preimage's orientation or congruence

Translations keep

• both congruence and orientation

• only congruence

• only orientation

• neither

What is congruence?

• Same size, different shape

• Same size, same shape

• The way a figure is facing

• Flipping over a line

Dilations keep

• both congruence and orientation

• only congruence

• only orientation

• neither

Reflections keep

• both congruence and orientation

• only congruence

• only orientation

• neither

Choose the best option for each category.

Congruence:

(a)  

Orientation of the figure:

​ (b)   ​​ ​

Orientation of the vertices:

​ (c)  

• Congruence is not preserved

• Orientation of the figure is preserved

• Orientation of the vertices is preserved

• Congruence is preserved

• Orientation of the vertices is not preserved

• Orientation of the figure is not preserved

Choose the correct option for each category.

Congruence:

(a)  

Orientation of the figure:

​ (b)  

​Orientation of the vertices:

​ (c)  

• Congruence is preserved

• Orientation of the vertices is preserved

• Congruence is not preserved

• Orientation of the figure is not preserved

• Orientation of the vertices is not preserved

• Orientation of the figure is preserved

If triangle STU is rotated 90° counterclockwise about the origin to create triangle S’T’U.

Triangle STU is ​ (a)   to triangle S’T’U.

• not congruent

• similar

• congruent