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



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