Chapter 4 Congruence of Line Segments, Angles, and Triangles

Solution The bisector of an angle separates the angle into two congruent angles. Therefore, RSQ QST.Then since congruent angles have equal measures, we may write an equation that states that mRSQ mQST. 4x 3x 20 x 20 mRSQ 4x mQST 3x 20 4(20) 3(20) 20 80 60 20 80 Answer mRSQ QST 80 Writing About Mathematics 1. ................
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