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 Plain and Spherical Trigonometry : with a Preface ...
T. Woodward, 1723 - 364 sider
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alſo equal Angle ABC Angle BAC Baſe BC becauſe biſected Center Circle ABCD Circumference Cone conſequently contain'd Coſ Cylinder demonſtrated deſcrib'd deſcribed Diſtance drawn thro equal Angles equiangular Equimultiples firſt fore greater laſt leſs leſſer likewiſe Logarithm Magnitudes Meaſure muſt Number oppoſite P R O B L E P R O P O S I T I O N P R O Pos parallel Parallelogram perpendicular Polygon Priſms Prop Rectangle Right Angles Right-lin'd Figure ſaid ſame Altitude ſame Baſe ſame Multiple ſame Plane ſame Proportion ſame Reaſon ſay ſecond Segment ſhall be equal Sides ſimilar ſince Sine Solid ſolid Parallelepipedon ſome Square ſtand Subtangent ſubtending T H E O R E T H E O R. E. M. theſe thoſe Triangle ABC Unity Vertex the Point Wherefore
Side 190 - 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 63 - DBA ; and because AE, a side of the triangle DAE, is produced to B, the angle DEB is greater (16.
Side 152 - ... therefore the angle DFG is equal to the angle DFE, and the angle at G to the angle at E : but the angle DFG is equal to the angle ACB...
Side 100 - About a given circle to describe a triangle equiangular to a given triangle. Let ABC be the given circle, and DEF the given triangle; it is required to describe a triangle about the circle ABC equiangular to the triangle DEF.
Side 17 - CF, and the triangle AEB to the triangle CEF, and the remaining angles to the remaining angles, each to each, to which...
Side 210 - CD; therefore AC is a parallelogram. In like manner, it may be proved that each of the figures CE, FG, GB, BF, AE, is a parallelogram...
Side 229 - If two right-angled triangles have their hypotenuses equal, and one side of the one equal to one side of the other, the triangles are congruent.
Side 164 - ABG ; (vi. 1.) therefore the triangle ABC has to the triangle ABG the duplicate ratio of that which BC has to EF: but the triangle ABG is equal to the triangle DEF; therefore also the triangle ABC has to the triangle DEF the duplicate ratio of that which BC has to EF. Therefore similar triangles, &c.
Side 93 - If from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.