Answer:
No:9
Explanation:
We have here a perpendicular bisector of GH,so it divides this segment into two equals parts, that is.GB=10,and BH=10.
We also have that the formed triangles BCG and BCH are congruent since GB is congruent to BH and they share the same side BC. The angles Therefore,we have:
BH= 10
GC = CH = 20