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Gradations in Euclid : books i. and ii., with an explanatory preface [&c ...
Visualizzazione completa - 1870
ABCD added Algebra angles equal applied Arithmetic ascertain base bisect called centre circle circumference common Concl Cons construct contained demonstration describe diagonal diameter difference distance divided draw drawn Euclid extremity fall feet figure four Geometry give given line given point greater half inch intersect join length less magnitude MAPS means measure meet method miles object opposite sides parallel parallelogram perpendicular plane Practical principle PROB problem produced Prop proposition proved radius Recap rectangle rectilineal figure representative respect right angles scale segment sides similar square straight line surface taken term thing third triangle truth twice units Wherefore whole
Pagina 91 - 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...
Pagina 155 - 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 of the other part, is equal to the square of the straight line which is made up of the whole and that part.
Pagina 41 - A segment of a circle, is the figure contained by a straight line and the circumference which it cuts off.
Pagina 91 - If two triangles have two sides of the one respectively equal to two sides of the other, and the contained angles supplemental, the two triangles are equal.
Pagina 94 - IF a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon the same side; and likewise the two interior angles upon the same side together equal to two right angles...
Pagina 174 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Pagina 18 - Pythagoras' theorem states that the square of the length of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the lengths of the other two sides.
Pagina 136 - If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sides of it ; the angle contained by these two sides is a right angle.