A Manual of Surveying for India, Detailing the Mode of Operations on the Revenue Surveys in Bengal and the North-western ProvincesW. Thacker, 1851 - 718 sider |
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Side 2
... less or greater than a right angle . Thus : ABC is a right angle , DBC an acute angle , and EBC an obtuse angle . E A D * When several angles are at one point B , any one of them is ex- pressed by three letters , of which the letter ...
... less or greater than a right angle . Thus : ABC is a right angle , DBC an acute angle , and EBC an obtuse angle . E A D * When several angles are at one point B , any one of them is ex- pressed by three letters , of which the letter ...
Side 8
... less than . The Sign To denote that four quantities , A , B , C , D , are proportional , they are usually written thus : A : B :: C : D , and read thus : A is to B , so is C to D ; but when three quantities , A , B , C , are ...
... less than . The Sign To denote that four quantities , A , B , C , D , are proportional , they are usually written thus : A : B :: C : D , and read thus : A is to B , so is C to D ; but when three quantities , A , B , C , are ...
Side 10
... they are also equal to four right angles which is absurd . / H In the same manner it may be shown that the angles AEF and CFE cannot be less than two right angles . Therefore Again ( by Therefore they are equal to two right 10.
... they are also equal to four right angles which is absurd . / H In the same manner it may be shown that the angles AEF and CFE cannot be less than two right angles . Therefore Again ( by Therefore they are equal to two right 10.
Side 12
... less the given angle will be equal to the sum of the other two ; or 180 less the sum of two given angles , gives the other one . Cor . 2. In every right - angled triangle , the two acute angles 90 degrees , or one right angle ...
... less the given angle will be equal to the sum of the other two ; or 180 less the sum of two given angles , gives the other one . Cor . 2. In every right - angled triangle , the two acute angles 90 degrees , or one right angle ...
Side 14
... less than a semi - circle , the arc AB or the angle ADB is less than half a semi- circle , and consequently less than a right angle . Cor . 4. An angle in a segment less than a semi - circle is greater than a right angle , for since the ...
... less than a semi - circle , the arc AB or the angle ADB is less than half a semi- circle , and consequently less than a right angle . Cor . 4. An angle in a segment less than a semi - circle is greater than a right angle , for since the ...
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Populære avsnitt
Side 7 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals the wholes are equal. 3. If equals be taken from equals the remainders are equal. 4. If equals be added to unequals the wholes are unequal. 5. If equals be taken from unequals the remainders are unequal. 6. Things which are double of the same are equal to one another.
Side 2 - But when a straight line standing upon another straight line makes the adjacent angles equal to one another, each of the angles is a right angle : (Ю.
Side 14 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Side 12 - F, which is the common vertex of the triangles: that is », together with four right angles. Therefore all the angles of the figure, together with four right angles are equal to twice as many right angles as the figure has sides.
Side 240 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base equal to one another, and likewise those which are terminated in the other extremity.
Side 2 - When several angles are at one point B, any one of them is expressed by three letters, of which the letter that is at the vertex of the angle, that is, at the point in which the straight lines that contain the angle meet one another, is put between the other two letters, and one of these two...
Side 4 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Side 273 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 149 - ... to make the objects appear on the other wire ; if the contact still remains perfect, the axis of the telescope is in proper adjustment ; if not, it must be altered by moving the two screws which fasten, to the up-and-down piece, the collar into which the telescope screws. This adjustment is not very liable to be deranged.
Side 5 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...