I’m really really sorry i can’t ask another question until i answer somebody’s questions.
Answer:
GH=12
Step-by-step explanation:
Definition of a perpendicular Bisector: a perpendicular bisector intersects another line segment at 90° and divides it into two equal parts.
Therefore it divides the line GI into two equal parts. That means that GH=HI and it was given that HI=12.
Did you ever do this if so do you have an email I can message you on. I've been stuck on this.