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



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