Syllabus of Plane Geometry: (corresponding to Euclid, Books I-VI) ...Macmillan & Company, 1876 - 58 sider |
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Side 6
... less than B , C is less than D. Three such Theorems having been demonstrated geometrically , the converse of each is always and necessarily true . Rule of Identity . If there is but one A , and but one B ; then from the fact that A is B ...
... less than B , C is less than D. Three such Theorems having been demonstrated geometrically , the converse of each is always and necessarily true . Rule of Identity . If there is but one A , and but one B ; then from the fact that A is B ...
Side 9
... less than a right angle . DEF . 17. Án obtuse angle is that which is greater than one right angle , but less than two right angles . DEF . 18. A reflex angle is a term sometimes used for a major- conjugate angle . DEF . 19. When the sum ...
... less than a right angle . DEF . 17. Án obtuse angle is that which is greater than one right angle , but less than two right angles . DEF . 18. A reflex angle is a term sometimes used for a major- conjugate angle . DEF . 19. When the sum ...
Side 13
... less than the third side . THEOR . 13. If from the ends of the side of a triangle two straight lines are drawn to a point within the triangle , these are together less than the two other sides of the triangle , but contain a greater ...
... less than the third side . THEOR . 13. If from the ends of the side of a triangle two straight lines are drawn to a point within the triangle , these are together less than the two other sides of the triangle , but contain a greater ...
Side 14
... less than two right angles . COR . 1. If a triangle has one right angle or obtuse angle , its remaining angles are acute . COR . 2. From a given point outside a given straight line , only one perpendicular can be drawn to that line ...
... less than two right angles . COR . 1. If a triangle has one right angle or obtuse angle , its remaining angles are acute . COR . 2. From a given point outside a given straight line , only one perpendicular can be drawn to that line ...
Side 15
... less than the other given side . SECTION 3 . PARALLELS AND PARALLELOGRAMS . DEF . 35. Parallel straight lines are such as are in the same plane and being produced to any length both ways do not meet . AXIOM 5. Two straight lines that ...
... less than the other given side . SECTION 3 . PARALLELS AND PARALLELOGRAMS . DEF . 35. Parallel straight lines are such as are in the same plane and being produced to any length both ways do not meet . AXIOM 5. Two straight lines that ...
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Syllabus of Plane Geometry: (corresponding to Euclid, Books I-VI) ... Association for the improvement of geometrical teaching Uten tilgangsbegrensning - 1876 |
Vanlige uttrykk og setninger
adjacent angles adjoining sides angles are equal angles equal angles opposite antecedent bisects Book called centre circle a regular circumscribe conjugate angles consequent construct a triangle contrapositive diagonal distance divided internally equal altitude equal angles equal arcs equal circles equimultiples given angle given circle given point given ratio given rectilineal figure given straight line greater angle hypotenuse identically equal inscribe interior angles intersect lines are proportional locus middle point minor arcs multiple obtuse angle opposite angles parallel straight lines parallelogram perpendicular PLANE GEOMETRY point of contact point of division polygon PROB quadrilateral radii radius ratio compounded ratios are equal rectangle contained regular figures right angles Rule of Conversion Rule of Identity SECTION sector segments side opposite Similar rectilineal figures square straight angle straight line drawn straight line joining subtended Superposition SYLLABUS OF PLANE tangent THEOR Theorem triangles are identically vertex whence whole numbers
Populære avsnitt
Side 14 - 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.
Side 17 - Assuming that 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...
Side 14 - Of all the straight lines that can be drawn to a given straight line from a given point outside it, the perpendicular is the shortest.
Side 13 - Any two sides of a triangle are together greater than the third side.
Side 23 - Iff 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 of the other part, is equal to the square of the straight line which is made up of the whole and that part.
Side 13 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Side 34 - If the distance between the centres of two circles is equal to the difference of their radii, the two circles will touch each other internally.
Side 56 - If three straight lines be proportionals, the rectangle contained by the extremes is equal to the square on the mean ; and conversely, if the rectangle contained by the extremes be equal to the square on the mean, the three straight lines are proportionals.
Side 28 - In the same circle, or in equal circles, equal arcs are subtended by equal chords : and conversely, equal chords subtend equal arcs.
Side 4 - The enunciation of a Theorem consists of two parts, — the hypothesis, or that which is assumed, and the conclusion, or that which is asserted to follow therefrom. Thus in the typical Theorem, If A is B, then C is D, (i), the hypothesis is that A is B, and the conclusion, that C is D.