8th STAAR 3c (dilations)

Triangle TRW is shown on the grid.

Triangle TRW will be dilated by a scale factor of n with the origin as the center of dilation to create triangle T'R'W'. Which ordered pair best represents the location of point R'?

A polygon with be dilated on a coordinate grid to create a smaller polygon. The polygon is dilated using the origin as the center of dilation.

Which rule could represent this dilation?

• If a is greater than 1, the image of the polygon is congruent to the polygon.

• If a is between 0 and 1, the image of the polygon is congruent to the polyogn.

• If a is greater than 1, the image of the polygon is smaller than the polygon.

• If a is between 0 and 1, the image of the polygon is smaller than the polygon.

Triangle JKL is dilated with the origin as the center of dilation to create triangle J'K'L'.

Which rule best represents the dilation that has been applied to triangle JKL to create triangle J'K'L'?

A square with a perimeter of 20 units is graphed on a coordinate grid. The square is dilated by a scale factor of 0.4 with the origin as the center of dilation.

If (x, y) represents the location of any point on the original square, which ordered pair represents the coordinates of the corresponding point on the resulting square?

Triangle MNP is graphed on a coordinate grid with vertices of M(-3, -6), N(0, 3), and P(6, -3). Triangle MNP is dilated by a scale factor of u with the origin as the center of dilation to create triangle M'N'P'.

Which ordered pair represents the coordinates of the vertex P'?

Quadrilateral FGHJ was dilated with the origin as the center of dilation to create quadrilateral F'G'H'J'.

Which rule best represents the dilation that was applied to quadrilateral FGHJ to create quadrilateral F'G'H'J'?

Circle I was dilated with the origin as the center of dilation to create Circle II.

Which rule best represents the dilation applied to Circle I to create Circle II?