To find the scale factor, we need to compare the corresponding sides of the two triangles.
Let's call the original triangle ABC and the copy triangle DEF.
We are given the following lengths for the corresponding sides:
AB = 10 in
BC = 15 in
AC = 18 in
DE = 20 in
EF = 30 in
DF = 36 in
To find the scale factor, we can compare the lengths of AB and DE:
scale factor = DE / AB
scale factor = 20 in / 10 in
scale factor = 2
Therefore, Randee uses a scale factor of 2 to create the copy triangle.
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 original on 10 in, 15, in, 18 in, 20 in, 30 in, 36 in.
1 answer