Similar Figures Dilations

Which rules best represents the dilation that was applied to quadrilateral ABCD to create quadrilateral A'B'C'D'?

• (x,y)--->(0.4x,0.4y)

• (x,y)--->(x+3,y+1.5)

• (x,y)--->(2.5x,2.5y)

• (x,y)--->(x+0.4,y+0.4)

Select all answers that would create a dilation.

• (x,y) -----> (2x,4y)

• (x,y) -----> (-2x,-2y)

• (x,y) -----> (½x,½y)

• (x,y) -----> (3x,3y)

• (x,y) -----> (1.2x,1.2y)

• (x,y) -----> (0.4x,0.4y)

• (x,y) -----> (x+3,y+1.5)

• (x,y) -----> (2.5x,2.5y)

• (x,y) -----> (x-1.5,y-3)

• Pentagon M'N'P'Q'R is larger than Pentagon MNPQR, because the scale factor is greater than 1.

• Pentagon M'N'P'Q'R is smaller than Pentagon MNPQR, because the scale factor is greater than 1.

• Pentagon M'N'P'Q'R is larger than Pentagon MNPQR, because the scale factor is less than 1.

• Pentagon M'N'P'Q'R is smaller than Pentagon MNPQR, because the scale factor is less than 1.

• A

• B

• C

• D

Figure JKLM is similar to figure PQRS.

Which proportion must be true for

these figures?

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Tell whether the two figures are similar. Explain your reasoning.

• Yes, similar because they are the same shape and side lengths are proportional.

• No, not similar because they are the same shape, but side lengths are not proportional.

• Yes, same shape

• No, different sizes

Figure ABCDE is similar to figure VWXYZ. Which proportion must be true?

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This two figures are...

• congruent and similar

• similar, but not congruent

• congruent, but not similar

• Neither congruent nor similar

Figure ABCDE is similar to figure VWXYZ.