ProveIt! Two-Column Proofs Practice Tool

Proof: Similar Triangles 3

line PQ $\|\|$ line RS

QT = 8

RT = 4

ST = 3

PS = 9

1.

1.

3 / PT = 4 / 8; 3 / PT = 1 / 2

line PQ $\|\|$ line RS

angle

P

congruent

angle

S

RT = 4

PS = 6 + 3; PS = 9

PS = PT + ST

QT = 8

3gon

PTQ ~

3gon

STR

ST = 3

angle

PTQ

congruent

angle

STR

PT = 6

ST / PT = RT / QT

ProveIt! by Michael Ferraro <mferraro@balstaff.org>.
Copyright ©2010. All rights reserved.