 | John Playfair - 1837 - 332 sider
...base (4. 1.) DB, and the straight line AB is divided into two equal parts in the point D. 18 PROP. XL PROB. To draw a straight line at right angles to a given straight line, from a given point in that line. Let AB be a given straight line, and C a point given in it ; it is required to draw a straight... | |
 | Euclides - 1837 - 112 sider
...Problem. To bisect a given finite straight line; that is, to divide it into two equal parts. Problem. a straight line at right angles to a given straight line from a given point in the same. PROPOSITION XI. To draw A JL \ COR. (Argument ad absurdum). Two right lines cannot have a common segment.... | |
 | Charles Reiner - 1837 - 254 sider
...draw a straight line equal to a given straight line. 3. To bisect a given finite straight line. 4. To draw a straight line at right angles to a given straight line. 5. To draw a straight line at right angles to a given straight line from a given point in the same.... | |
 | Robert Simson - 1838 - 434 sider
...the straight line AB is divided into two equal parts in the point D. Which was to be done. PROP. XI. PROB. To draw a straight line at right angles to a...straight line, from a given point in the same. Let AB be a given straight line, and C a point given in it : it is required to draw a straight line from the... | |
 | Euclides - 1838 - 264 sider
...the straightline ABis divided into , two equal parts in the point D. Which was to be done. PROP. XI. PROB. To draw a straight line at right angles to a...straight line, from a given point in the same. Let AB be a given straight line, and C a point given in it ; it is required to draw a straight line from the... | |
 | Euclid - 1838 - 470 sider
...the straight line AB is divided into two equal parts in the point D. Which was to be done. PROP. XI. PROB. To draw a straight line at right angles to a given straight line, from a given point in ihe same. Let AB be a given straight line, and C a point given in it : it is required to draw a straight... | |
 | Euclides - 1841 - 378 sider
...the straight line AB is divided into two equal parts in the point D. Which was to be done. PROP. XI. PROB. To draw a straight line at right angles to a...straight line, from a given point in the same. Let AB be a given straight line, and C a point given in it; it is required to draw from the point C a straight... | |
 | Euclides - 1842 - 316 sider
...angle ACD is equal to BCD ; therefore, AD is equal to DB (4. 1.). Thus AB is bisected in D. PROP. XI. PROB. To draw a straight line at right angles to a...straight line, from a given point in the same. Let AB be a given straight line, and ca point given in it ; it is required to draw a straight line from the point... | |
 | Chambers W. and R., ltd - 1842 - 744 sider
...practical problems, showing how to bisect (that is, divide in two) an angle and a straight line ; also how to draw a straight line at right angles to a given straight line, from a given point in that given line, as well as from a point without or beyond that given line. The 16th, 17th, 18th, and... | |
 | John Playfair - 1842 - 332 sider
...1.) DB, and the straight line AB is divided into two equal pans in the point D. AD PROP. XI. PROS. To draw a straight line at right angles to a given straight line, from a given point in that line. Let AB be a given straight line, and C a point given in it ; it is required to draw a straight... | |
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To draw a straight line at right angles to a given straight line, from a given point in the same. 
