OpenUp 8th Math 2.6 Review

Two figures are (a)   if one can fit exactly over the other after rigid transformation and dilation.

Identify a sequence of rigid transformations and/or dilation that takes the smaller figure to the larger on.

Identify a sequence of rigid transformations and/or dilation that takes the smaller figure to the larger on.

When a dilation is performed on a figure, what happens to the side lengths?

• they change according to the scale factor

• they do not change

When a dilation is performed on a figure, what happens to the angle measures?

• they change according to the scale factor

• they do not change

The figure shows a pair of similar triangles, one contained in the other. Describe a point and scale factor to use for a dilation moving the larger triangle to the smaller one.

• B with a scale factor 1/4

• B with a scale factor 4

• A with scale factor 2

• A with scale factor 1/2

The figure shows a pair of similar triangles, one contained in the other. Describe a point and scale factor to use for a dilation moving the larger triangle to the smaller one.

• A with a scale factor 1/3

• A with a scale factor 3

• B with scale factor 4

• B with scale factor 1/4