Are all the angles of triangle $ABC$ smaller than $90$ degrees?

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Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Mon May 31, 2021 8:05 am

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Are all the angles of triangle $ABC$ smaller than $90$ degrees?

(1) $AB<BC<AC$

(2) $\angle ABC =80$ degrees

Answer: C

Source: GMAT Club Tests

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Source: Beat The GMAT — Data Sufficiency | Mon May 31, 2021 8:05 am

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