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Complete the statement with always, sometimes, or never. Explain your reasoning.

50. A line has _____ endpoints.
51. A line and a point _____ intersect.
52. A plane and a point _____ intersect.
53. Two planes ______ intersect in a line.
54. Two points ______ determine a line.
55. Any three points not on the same line ____ determine a line.
56. Two lines that are not parallel _____ intersect.​