Question

this triangle is a scaled copy. it was scaled by a factor of 3. suppose you want to scale it back to its original size. what scale factor should you use? to scale back to the original, use a scale factor of

Explanation:

Step1: Recall scale - factor concept

To reverse a scaling by a factor of $k$, we use the reciprocal of $k$.

Step2: Identify the reciprocal

The original scale - factor is $k = 3$. The reciprocal of 3 is $\frac{1}{3}$.

Answer:

$\frac{1}{3}$