Answer:
NI = 3 cm
Step-by-step explanation:
The side splitting theorem allows you to set up this proportion.
[tex] \dfrac{AT}{AR} = \dfrac{TN}{NI} [/tex]
[tex] \dfrac{8}{2} = \dfrac{12}{NI} [/tex]
Cross multiply.
8NI = 2 *12
8NI = 24
NI = 3
