ProveIt! Two-Column Proofs Practice Tool

Proof: Congruent Triangles 4

ray TV bisects angle

angle

UTW

ray TV is an altitude in 3gon

3gon

TUW

3gon

TUW is isosceles

1.

1.

TV = TV

segment TW congruent

congruent

segment TU

ray TV is an altitude in 3gon

3gon

TUW

ray TV bisects angle

angle

UTW

3gon

TUW is isosceles

TVU =

TVW (or

angle

TVU

congruent

angle

TVW)

3gon

TUV

congruent

3gon

TWV

angle

UTV

congruent

angle

WTV

ray TV

perpendicular

segment UW

TVU = 90 $\^o$ ;

TVW = 90 $\^o$

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