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Mr. K.

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I believe Reiny may be right. I sometimes miss the "tricky" aspect of the questions.
"quad" means 4 It may not be an exact definition (you can look it up), but I'm going to say (or tell you) that laterals are sides. polygon with 4 sides would be my answer too.
Ok. Here is what I am thinking. As the student, you will need to see if I am also thinking this correctly. 30. If the the block weighs 40 pounds now (after 2 hours), and the block losses 1/3 of its weight every hour, then it has lost 2/3 (2 hours of losing
I beieve it would be a right angle. Like the floor (_) running into the wall (|). The line goes up. Then you draw a line diagonal(\ or /) to complete the triangle. Perpendicular means the lines run into each other. _|

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