randee draws these two triangles with lengths given in centimeters what scale factor does she use to create the copy on the right from the orginal on the left

To determine the scale factor, we need to compare the corresponding side lengths of the original triangle (on the left) and the copy (on the right).

Let's label the vertices of the original triangle as A, B, and C, and the copy triangle as A', B', and C', respectively.

If we compare the corresponding side lengths:

AB to A'B': AB = 5 cm, A'B' = 10 cm
BC to B'C': BC = 6 cm, B'C' = 12 cm
AC to A'C': AC = 8 cm, A'C' = 16 cm

To find the scale factor, we can choose any pair of corresponding side lengths and divide them. Let's choose AB and A'B'.

Scale factor = AB/A'B' = 5 cm / 10 cm = 0.5

Therefore, Randee used a scale factor of 0.5 to create the copy on the right from the original on the left.