A trapezoid has an area of 100 square units. What scale factor would be required to dilate the trapezoid to have each area?

1. 6400 square units
2. 900 square units
3. 100 square units
4. 25 square units
5. 4 square units

A triangle has an area of 6 square inches and a perimeter of 12 inches. Suppose it is dilated by some scale factor, and the area and perimeter of the image are calculated. Match each graph with the relationship it represents.

A graph. X axis from 0 to 70 by 10’s. Y axis from 0 to 3 by 1’s. Line begins at the origin, moves upward and to the right through about 10 comma 1 point 2 5, 40 comma 2 point 5, and ends around 80 comma 3 point 5.

A graph. X axis from 0 to 70 by 10’s. Y axis from 0 to 7 by 1’s. Line begins at the origin and moves upward and to the right through about 10 comma point 7 5, 30 comma 2 point 5, and ends around 80 comma 6 point 5.

A graph. X axis from 0 to 7 by 1’s. Y axis from 0 to 70 by 10’s. Line begins at the origin and moves upward and to the right through about 1 comma 12, 3 comma 35, and ends around 6 point 5 comma 80.

A graph. X axis from 0 to 3 by 1’s. Y axis from 0 to 70 by 10’s. Line begins at the origin, moves upward and to the right through about point 5 comma 5, 2 point 5 comma 25, and ends around 3 point 5 comma 80.

A polygon with area 10 square units is dilated by a scale factor of . Find the area of the image for each value of .

Parallelogram was obtained by dilating parallelogram using as the center of dilation.

1. What was the scale factor of the dilation?
2. How many parallelograms that are congruent to have we fit inside ?
3. How does the area of parallelogram compare the are of parallelogram ?
4. If parallelogram has an area of 12 square units, what is the area of parallelogram ?

Select all solids whose cross-sections are dilations of some two-dimensional shape using a point directly above the shape as a center and scale factors ranging from 0 to 1.