What aspects of lines have to be diffrent

If two lines are parallel, they are pretty much completely the same. I mean, the length can be different. You could have a millimeter long line below a infinite line, as long as they are going the exact same direction making them parallel. Also, I guess the thickness could be different haha.

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relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

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use context clues to figure out the meaning of the bolded word:  

the sage gardener knew when she had to water her plants.  

question 8 options:

mint plant

wise

happy

lazy