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adjacent Angles Angle ABC Angle BAC Angle BCD bisected Center Circle ABCD Circumference Cone contain'd Coroll Cylinder demonstrated describ'd described Diameter double drawn thro equal Angles equal Right Lines equiangular equilateral Equimultiples Euclid f equal faid fame Altitude fame Base fame Multiple fame Plane fame Proportion fame Reason fore four Right given Right Line Gnomon greater homologous join less likewise Logarithm Magnitudes Number pall Parallelogram passing thro perpendicular Polygon Prisms Prop PROPOSITION prov'd Quadrant Ratio Rectangle Rectangle contained remaining Angle Right Angles Right-lin'd Figure Segment Semicircle Sine solid Angle solid Parallelepipedon Sphere Subtangent subtending Tangent THEOREM thereof third three Right Lines touch Triangle ABC triplicate Proportion Unity Vertex the Point Wherefore whole
Page 194 - 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.
Page 65 - DBA ; and because AE, a side of the triangle DAE, is produced to B, the angle DEB is greater (16.
Page 156 - ... 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...
Page 102 - 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.
Page 17 - CF, and the triangle AEB to the triangle CEF, and the remaining angles to the remaining angles, each to each, to which...
Page 214 - 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...
Page 235 - 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.
Page 168 - 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.
Page 97 - 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.
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