Here is a center of dilation and a triangle. 

1. Measure the sides of triangle (to the nearest mm).
2. Your teacher will assign you a scale factor. Predict the relative lengths of the original figure and the image after you dilate by your scale factor.
3. Dilate triangle using center and your scale factor.
4. How does your prediction compare to the image you drew?
5. Use tracing paper to copy point , triangle , and your dilation. Label your tracing paper with your scale factor.
6. Align your tracing paper with your partner’s. What do you notice?

1. Dilate quadrilateral using center and your scale factor.

   

2. Complete the table.

   Ratio
   Value

3. What do you notice? Can you prove your conjecture?
4. Complete the table.

   Ratio
   Value

5. What do you notice? Does the same reasoning you just used also prove this conjecture?