Proof: Congruent Triangles 5     
D is midpoint of segment TN
D is midpoint of segment SA
segment ST segment NA
1. 
1. 
D is midpoint of segment TN
SDT ADN
SD = AD
TD = ND
S A
DTS DNA
D is midpoint of segment SA
segment ST segment NA



ProveIt! by Michael Ferraro <mferraro@balstaff.org>.
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