Similar Triangle Scale Factor

In the diagram below, △ABC was dilated to create △A’B’C’. What is the scale factor for this dilation? Scale factor = ______

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

The triangle located at C (-1, -2) V (-2, 2) N (2, 0) is dilated by a SF of 5. What are the coordinates of C'V'N'?

• C' (-5, -2) V' (-10, 2) N' (10, 0)

• C' (-1, -10) V' (-2, 10) N' (2, 0)

• C' (4, 3) V' (3, 7) N' (7, 5)

• C' (-5, -10) V' (-10, 10) N' (10, 0)

Determine if the triangles are similar. If so find the scale factor.

• Yes, by SAS. Scale factor is 3/2

• Yes, by SAS. Scale factor is 1/2

• Yes, by SAS. Scale factor is 3/1

• No, not similar.

Are the triangles similar? If so, what is the scale factor from ΔDEF to ΔABC?

• Yes. 1.5

• Yes. ⅔

• Yes. 2

• No.

Which of the following rules describes the transformation from ΔABC to ΔA'B'C'?

If k=1.25 (k is scale factor), then a dilation will result in a(n)______

• reduction

• enlargement

• scale factor

• center of dilation

Which of the following Scale Factors would make a shape smaller?

• SF = 1

• SF = 0.5

• SF = 2

• SF = 3

Which of the following transformations create similiar, and not congruent shapes?

• Translation

• Reflection

• Rotation

• Dilation