# Chapter 1 - Section 1.2 - Informal Geometry and Measurement - Exercises: 26

$\angle$3 is congruent to $\angle$4.

#### Work Step by Step

Through the properties of parallel lines and transversals, $\angle$3 is congruent to $\angle$4 by the Alternate Interior Angles Theorem (page 75 of your textbook).

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