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diff --git a/Save_Mathematics/P5/map511m17/map511m17a01/a.txt b/Save_Mathematics/P5/map511m17/map511m17a01/a.txt deleted file mode 100644 index ee6c521..0000000 --- a/Save_Mathematics/P5/map511m17/map511m17a01/a.txt +++ /dev/null @@ -1,64 +0,0 @@ -<p> - Introduction -</p> -<p> - In human being life,a protractor is an instrument used to measure angles between two or more lines joined together,angles of different figures as for examples square,rectangles,etc..It can also used to measure the angles with small degree. - <br /> - <br /> - <br /> - (here are some graphs of perpendicular lines,square,rectangle,etc....). - <br /> - <br /> - <br /> - when you want to use protractor in measuring angles you start from zero up to three hundred sixty degrees.You have to remember that in measuring angles we use degree as - <span style="color: #0000ff;"> - unit . - <br /> - <br /> - <span style="font-weight: bold; text-decoration: underline;"> - STRUCTURE OF PROTRACTOR - <br /> - </span> - <span style="color: #000000;"> - There are two kinds of protractor: - <br /> - </span> - </span> -</p> -<ul> - <li> - The inner scale - <span style="color: #0000ff;"> - <span style="color: #000000;"> - and - <br /> - </span> - </span> - </li> - <li> - <span style="color: #0000ff;"> - <span style="color: #000000;"> - The outer scale. - </span> - </span> - </li> -</ul> -<p> - <span style="color: #0000ff;"> - <span style="color: #000000;"> - The inner scale is read from right to left while the outer scale is read from left to right.when measuring the reflex angles,first you measure the obtuse angle and then subtract it from three hundred sixty degrees to get the reflect angle. - <br /> - <br /> - (pictures of protractor showing the inner scale and picture of protractor showing the outer scale). - <br /> - <br /> - The outer scale is used to measure the angles situated on left hand side while the inner scale is used to measure angles situated on the right hand scale. - <br /> - <br /> - <span style="color: #0000ff; text-decoration: underline;"> - Note - </span> - :When measuring angles,we start from zero degree.Therefore the zero on the protractor helps you to decide which scale to use. - </span> - </span> -</p>
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