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soldi70 [24.7K]
3 years ago
5

Perpendicular Bisectors I'm confused on what to do here

Mathematics
1 answer:
Paha777 [63]3 years ago
8 0

bi(two)...sector(section).  Bisector cuts the segment into two equal sections.  

BC = CD             <em>definition of perpendicular bisector</em>

BC + CD = BD    <em>segment addition postulate</em>

CD + CD = BD   <em>substitution</em>

2CD = BD          <em>added like terms</em>

2CD = 16           <em>substitution</em>

  CD = 8            <em>division property of equality</em>

CD = y + 3         <em>given per graph</em>

y  + 3 = 8           <em>transitive property</em>

  y = 5               <em>subtraction property</em>

Answer: 5



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