Question: line

Answer: undefined

could be defined as a straight path that extends in two opposite directions with no ends

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Question: plane

Answer: undefined

could be a flat surface that extends without end

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Question: point

Answer: undefined

could be a location

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Question: collinear points

Answer: points that lie on the same line

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Question: postulate

Answer: an accepted statement of fact

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Question: congruent segments

Answer: segments that have the same length

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Question: congruent angles

Answer: angles with the same measurement

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