# Chapter 5 - Section 5.3 - Proving Triangles Similar - Exercises - Page 243: 17

The missing blanks are as follows: 1. QR $\bot$ RP and MN $\bot$ NP 2. If two lines are perpendicular, then the angles between them are 90 degree angles. 3. Angle N and QRP are congruent. 4. Identity property 5. Triangle MNP is similar to triangle QRP; reason: AA

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