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Prove the triangle inequality (la + bl < la I + lbl) by adding the twoinequalities:-lal < a < lal, -lhl < b < lhl

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter3: Triangles

Section3.5: Inequalities In A Triangles

Problem 39E

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Prove the triangle inequality (la + bl < la I + lbl) by adding the two
inequalities:
-lal < a < lal, -lhl < b < lhl

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