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Geometry: write a two column proof

Geometry: write a two column proof-example-1
User NehaG
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Explanation:


\angle1\ and\ \angle 2\ \text{are complementary}\to m\angle1+m\angle2=90^o\\\\m\angle ACX=m\angle1+m\angle2=90^o\to XA^(\to)\perp XC^(\to)

User Grandizer
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