Staar Dilations

Triangle ABC was dilated with the origin as the center of dilation to create triangle A’B’C’. Which rule best represents the dilation that was applied to triangle ABC to create triangle A'B'C'?

• 
• 
• 
• 

A'B'C' is a dilation of Δ ABC, with the origin as the center of dilation. Which of the following is the appropriate algebraic representation of the dilation?

Rectangle M'N'P' is a dilation of rectangle MNPR, with the origin as the center of dilation.  Which of the following is the scale factor used to dilate the rectangle?

a transformation that ​changes the size (enlargement or reduction) of a figure is called a ​ ​ ​ (a)  

• dilation

• rotation

• reflection

• translation

Pentagon M'N'P'Q'R' IS ​ (a)   than pentagon MNPQR, because the scale factor is ​ (b)   .

• smaller

• less than 1

• larger

• greater than 1

If the scale factor is greater than 1, the dilation is (a)  

• an enlargement

• a rotation

• a translation

• a reduction

• F

• G

• H

• J

49% of students got this question right.

• A

• B

• C

• D

Quadrilateral S'T'U'V' is a dilation of quadrilateral STUV, with the origin as the center of dilation.  Which of the following is the scale factor used to create quadrilateral S'T'U'V'?