The College Euclid: Comprising the First Six and the Parts of the Eleventh and Twelfth Books Read at the Universities ... By A. K. Isbister1865 |
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Página 2
... ABC , or CBA ; that which is con- tained by AB , DB , is named the angle ABD ... circle is a plane figure contained by one line , which is called the ... circle is a straight line drawn through the centre , and terminated both ways by the ...
... ABC , or CBA ; that which is con- tained by AB , DB , is named the angle ABD ... circle is a plane figure contained by one line , which is called the ... circle is a straight line drawn through the centre , and terminated both ways by the ...
Página 6
... circle BCD ; ( post . 3 ) from the centre B , at the distance BA , describe the circle ACE ; and from the point C , in which the circles cut one another , draw the straight lines CA , CB , to the points A , B. ( post . 1. ) Then ABC ...
... circle BCD ; ( post . 3 ) from the centre B , at the distance BA , describe the circle ACE ; and from the point C , in which the circles cut one another , draw the straight lines CA , CB , to the points A , B. ( post . 1. ) Then ABC ...
Página 8
... circle DEF . ( post . 3. ) Then AE shall be equal to C. DEMONSTRATION Because A is the centre of the circle DEF ... ABC , DEF , be two triangles , which have the two sides AB , AC , equal to the two sides , DE , DF , each to each , viz ...
... circle DEF . ( post . 3. ) Then AE shall be equal to C. DEMONSTRATION Because A is the centre of the circle DEF ... ABC , DEF , be two triangles , which have the two sides AB , AC , equal to the two sides , DE , DF , each to each , viz ...
Página 82
... circle . ( References - Prop . 1. 8 , 10 , 11. ) Let ABC be the given circle . It is required to find its centre . B E CONSTRUCTION Draw within the circle any straight line AB , and bisect AB in D ; ( I. 10 ) from the point D draw DC at ...
... circle . ( References - Prop . 1. 8 , 10 , 11. ) Let ABC be the given circle . It is required to find its centre . B E CONSTRUCTION Draw within the circle any straight line AB , and bisect AB in D ; ( I. 10 ) from the point D draw DC at ...
Página 83
... circle , the straight line which joins them shall fall within the circle . ( References - Prop . 1. 5 , 16 , 19 ; III . 1. ) Let ABC be a circle , and A , B , any two points in the circumference . Then the straight line drawn from A to ...
... circle , the straight line which joins them shall fall within the circle . ( References - Prop . 1. 5 , 16 , 19 ; III . 1. ) Let ABC be a circle , and A , B , any two points in the circumference . Then the straight line drawn from A to ...
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The College Euclid: Comprising the First Six and the Parts of the Eleventh ... Euclides Sin vista previa disponible - 2016 |
Términos y frases comunes
ABCD AC is equal adjacent angles angle ABC angle ACB angle BAC angle equal base BC bisect Book centre circle ABC circumference compounded constr DEMONSTRATION diameter double draw Edition English equal angles equal straight lines equal to BC equiangular equilateral and equiangular equimultiples Euclid exterior angle four magnitudes fourth French given circle given point given rectilineal angle given straight line gnomon Grammar greater ratio inscribed isosceles triangle join less Let ABC multiple opposite angles parallel parallelogram pentagon perpendicular plane polygon proportionals proposition Q. E. D. PROP rectangle contained rectilineal figure References-Prop remaining angle right angles segment similar solid angle square of AC straight line AC THEOREM third three straight lines touches the circle triangle ABC twice the rectangle wherefore
Pasajes populares
Página 140 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Página xiv - The straight line drawn at right angles to the diameter of a circle, from the extremity of it, falls without the circle...
Página 310 - IF a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
Página 33 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Página vi - If a straight line be divided into any two parts, four times the rectangle contained ~by the whole line and one of the parts, together with the square on the other part, is equal to the square on the straight line which is made up of the whole and that part.
Página 310 - 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.
Página xxxvii - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. D c A' D' Hyp. In triangles ABC and A'B'C', ZA = ZA'. To prove AABC = ABxAC. A A'B'C' A'B'xA'C' Proof. Draw the altitudes BD and B'D'.
Página 69 - To divide a given straight line into two parts, so that the rectangle contained by the whole and one of the parts, shall be equal to the square of the other part.
Página 287 - If any point be taken in the diameter of a circle which is not the centre, of all the straight lines which can be drawn from it to the circumference, the greatest is that in which the centre is, and the other part of that diameter is the least...