Proof: Congruent Triangles 4     
ray TV bisects UTW
ray TV is an altitude in TUW
TUW is isosceles
1. 
1. 
TV = TV
segment TW segment TU
TUW is isosceles
TUV TWV
TVU = TVW (or TVU TVW)
TVU = 90; TVW = 90
UTV WTV
ray TV bisects UTW
ray TV is an altitude in TUW
ray TV segment UW



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