Angles at a Point


   
 
Theorem 1
If a straight line meets another straight line, the adjacent angles so formed are supplementary.
 
 
A straight line CO meets straight line AB at O.
 
 
 
 
 
 
Converse of a Theorem
 
Converse of a Theorem is the transposition of a statement consisting of 'data' and 'to prove' 'Data' becomes 'To Prove' and 'To prove' becomes 'Data' in the converse theorem.
 
 
     
   
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