Explain why the indicated triangles are congruent.P is the midpoint of 
and 
. LO = MN. Explain why ?LPO ? ?NPM.
What will be an ideal response?
Since P is the midpoint of 
, 
? 
. Since P is the midpoint of 
, 
? 
. Since LO = MN, 
? 
. So three sides and an included angle of ?LPO are congruent to the corresponding parts of ?NPM. So ?LPO ? ?NPM by SSS.
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