| John Playfair - 1837 - 332 Seiten
...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 Seiten
...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 Seiten
...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 Seiten
...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 Seiten
...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 Seiten
...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 Seiten
...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 Seiten
...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 Seiten
...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 Seiten
...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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