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



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