Respuesta :

QR is a trademark for a type of matrix barcode which was first designed 1994 for the automotive industry in Japan.
A QR barcode is a machine readable optical label that contains info about the item that it's attached to.

Answer:

12 units

Step-by-step explanation:

if you are taking the k12 5.14 triangle midsegment theorem quiz

if its just a question qr it is a barcode that you scan