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Math Challenge I-B(c) (AMC8/MathCounts) Fall 2017 (Geometry)

 
 
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Math Challenge I-B(c) (AMC8/MathCounts) Fall 2017 (Geometry)
ZongWeston - 2017年10月24日 Tuesday 18:01
 

for 6.26 of week 6 handout, what does the figure look like, and where is O?

Thanks if you could help

My teacher is professor David