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# Saxon lesson learning concept statement number

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Saxon Lesson Learning Concept Statement Number Concept Name Description (answers what is this concept?) Question (among many) Correct Answer 1 9 Mathematical straight line Properties include no width and no ends in either direction. What is the width of a mathematical straight line? 0 Click me for video > QuickTimeª and a decompressor are needed to see this picture.

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14 Lengths of Lines: “Mathematical” versus Segments It follows that the length of a mathematical line is without limit; that is to say it is infinite. ___________________________________________________________________________________ A more practical type of straight line is the line segment. It is simply the line between any two points on a mathematical line. In the previous example the points A and B laid on a mathematical line. Here they can be considered the endpoints of a line segment. ____________________________________________________________________________________ Saxon Lesson Learning Concept Statement Number Concept Name Description (answers what is this concept?) Question (among many) Correct Answer 1 10 Length of mathematical straight line The length of a mathematical line is without limit (infinite) What is the length of a mathematical straight line? Without limit or infinite. Saxon Lesson Learning Concept Statement Number Concept Name Description (answers what is this concept?) Question (among many) Correct Answer 1 11 Line segment The portion of a mathematical straight line between endpoints. Is a line segment finite in length. Yes Click me for video > QuickTimeª and a decompressor are needed to see this picture.
15 Double Arrowed Overbar Notation for Mathematical Line Symbolically, a mathematical straight line can be represented by labeling any two points on such a line with letters or other symbols. We then construct a symbol for a line by putting the two letters together and then indicate it is the idealized mathematical line by putting a two-arrowed overbar over these letters. Thus if a line passes through points A and B we indicate it by We can draw a portion of such a line as: A . B. The arrows are suggestive of the idea that the line does not end, but continues indefinitely. _____________________________________ AB Saxon Lesson Learning Concept Statement Number Concept Name Description (answers what is this concept?) Question (among many) Correct Answer 1 12 Overbar symbol for mathematical straight line. AB with double arrowed overbar indicates a line without end that runs through point A and point B What symbol indicates a general mathematical straight line? Paired letters with double arrowed overbar. Click me for video ^ QuickTimeª and a decompressor are needed to see this picture.

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16 Simple Overbar Notation for Line Segment The notation we use to name a line segment is very similar to that used for the mathematical line differing only in the form of the overbar. Thus the line segment between A and B is given by: We can draw a line segment, again from point A to point B, as follows: B .
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• Fall '09
• WHITE
• Fractions, Correct Answer, Elementary arithmetic, Mathematics in medieval Islam

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