Mathematics, 07.12.2020 14:00 harleygirl9451

Given: If two in a triangle are 40 degree and 30 degree then the third angle measures 110 degree Given: If a triangle has and angle that measure 110 degree, then it is a obtuse triangle.
Conclusion: If two angles in a triangle are 40 degree and 30 degree then it is a obtuse angle.

Law Of detachment or Law of syllogism or Invalid

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Given: If two in a triangle are 40 degree and 30 degree then the third angle measures 110 degree Gi...