Euclid's Elements of Geometry: From the Latin Translation of Commandine, to which is Added, a Treatise of the Nature and Arithmetic of Logarithms ; Likewise Another of the Elements of Plane and Spherical Trigonometry ; with a Preface ...W. Strahan, 1782 - 399 sider |
Inni boken
Resultat 1-5 av 100
Side 2
... equal between themselves , each of these equal Angles is a Right one ; and that Right Line , which stands upon the other , is called a Per- pendicular to that whereon it ftands . XI . An Obtufe Angle is that which is greater than a ...
... equal between themselves , each of these equal Angles is a Right one ; and that Right Line , which stands upon the other , is called a Per- pendicular to that whereon it ftands . XI . An Obtufe Angle is that which is greater than a ...
Side 4
... equal to one and the fame Thing , are equal to one another . II . If to equal Things are added equal Things , the ... Angles are equal between them- felves . XI . If a Right Line , falling upon two other Right Lines , makes the inward Angles ...
... equal to one and the fame Thing , are equal to one another . II . If to equal Things are added equal Things , the ... Angles are equal between them- felves . XI . If a Right Line , falling upon two other Right Lines , makes the inward Angles ...
Side 7
... equal to two Sides of the other , each to each , and the Angle contained by thofe equal Sides in one Triangle ... Angles of one equal to the remaining Angles of the other , each to each , which fubtend the equal Sides . LET the two ...
... equal to two Sides of the other , each to each , and the Angle contained by thofe equal Sides in one Triangle ... Angles of one equal to the remaining Angles of the other , each to each , which fubtend the equal Sides . LET the two ...
Side 8
... Angle ACB equal to the Angle D F E ; which was to be demonftrated . PROPOSITION V. THEOREM . The Angles at the Bafe of an Ifoceles Triangle are equal between themselves : And , if the equal Sides be produced , the Angles under the Bafe ...
... Angle ACB equal to the Angle D F E ; which was to be demonftrated . PROPOSITION V. THEOREM . The Angles at the Bafe of an Ifoceles Triangle are equal between themselves : And , if the equal Sides be produced , the Angles under the Bafe ...
Side 9
... equal to the remaining Angles of the other , each to each , which fubtend the equal fides . And fo the An- gle FBC is equal to the Angle G CB ; and the Angle BCF equal to the Angle CB G. Therefore , because the whole Angle A BG hath been ...
... equal to the remaining Angles of the other , each to each , which fubtend the equal fides . And fo the An- gle FBC is equal to the Angle G CB ; and the Angle BCF equal to the Angle CB G. Therefore , because the whole Angle A BG hath been ...
Vanlige uttrykk og setninger
ABCD adjacent Angles alfo equal alſo Angle ABC Baſe becauſe bifected Centre Circle A B C Circumference Cofine Cone confequently Cylinder defcribed demonftrated Diameter Diſtance drawn equal Angles equiangular Equimultiples faid fame Altitude fame Multiple fame Plane fame Proportion fame Reafon fecond fhall be equal fimilar fince firft folid Parallelopipedon fome fore ftand fubtending given Right Line Gnomon join leffer lefs likewife Logarithm Magnitudes Meaſure Number parallel Parallelogram perpendicular Polygon Prifm Prop PROPOSITION Pyramid Quadrant Ratio Rectangle Rectangle contained remaining Angle Right Angles Right Line A B Right-lined Figure Segment Semicircle ſhall Sides A B Sine Solid Sphere Square Subtangent thefe THEOREM thofe thro tiple Triangle ABC Unity Vertex the Point Wherefore whofe Bafe
Populære avsnitt
Side 193 - 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 xxiii - If two triangles have two sides of the one equal to two sides of the other, each to each ; and have likewise the angles contained by those sides equal to each other; they shall likewise have their bases, or third sides, equal; and the two triangles shall be equal; and their other angles shall be equal, each to each, viz. those to which the equal sides are opposite.
Side 236 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Side 11 - ... sides equal to them of the other. Let ABC, DEF be two triangles which have the two sides AB, AC equal to the two sides DE, DF, each to each, viz. AB equal to DE, and AC to DF ; but...
Side 85 - EA : and because AD is equal to DC, and DE common to the triangles ADE, CDE, the two sides AD, DE are equal to the two CD, DE, each to each ; and the angle ADE is equal to the angle CDE, for each of them is a right angle ; therefore the base AE is equal (4.
Side 147 - A straight line is said to be cut in extreme and mean ratio, when the whole is to the greater segment as the greater segment is to the less.
Side 50 - CB, and to twice the rectangle AC, CB: but HF, CK, AG, GE make up the whole figure ADEB, which is the square of AB ; therefore the square of AB is equal to the squares of AC, CB, and twice the rectangle AC, CB. Wherefore, if a straight line be divided, &c.
Side xxv - EF (Hyp.), the two sides GB, BC are equal to the two sides DE, EF, each to each. And the angle GBC is equal to the angle DEF (Hyp.); Therefore the base GC is equal to the base DF (I.
Side xxxiv - ... therefore their other sides are equal, each to each, and the third angle of the one to the third angle of the other (26.
Side 194 - ABC, and they are both in the same plane, which is impossible ; therefore the straight line BC is not above the plane in which are BD and BE: wherefore, the three straight lines BC, BD, BE are in one and the same plane. Therefore, if three straight lines, &c.