Question

Given a line segment containing the points A,B, & C, in order, if AB is 11 and BC is 12, then the length of AC would be ____.

Answer 1

23 or 1

Explanation:

for answer 23: we considered the segment ABC which means A is the leftest point and C is the rightest point. then AC = AB+BC

for answer 1: we considered the segment CAB which means C is the leftest point, and B is the rightest point. Then AC = CA = BC-AB = 12-11=1