iammunch iammunch

23-09-2018
Mathematics

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I need help solving this Geometry problem. Thanks

I need help solving this Geometry problem Thanks class=

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jimrgrant1 jimrgrant1

23-09-2018

ΔABC is an obtuse triangle

∠ ABC = ∠ABD + ∠ DBC = 60° + 40° = 100°

thus ∠ ABC = 100° is an obtuse angle

hence ΔABC is an obtuse triangle

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