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29-09-2016
Mathematics

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Theorem 3-8 states that in a plane, two lines perpendicular to the same line are parallel. Explain why the phrase "in a plane" is needed. (Hint: Refer to a rectangular solid to help you visualize the situation.)

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Аноним Аноним

29-09-2016

because for two lines to be perpendicular to the same line they would both have to be in the same plane as the line they are perpendicular to.

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