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acting amount angle Arithmetic axis ball base body Book cent centre of gravity circle coefficient common contained cost crown 8vo cubic curve decimal Define described determine diameter difference direction distance Divide drawn ellipse English equal equation equilibrium Explain expression feet Find fixed fluid foot force four fraction given greatest half History horizontal horizontal plane hour inches inscribed interest least length logarithms means measure miles moving Multiply observed parallel passing perpendicular placed plane position pressure produced projected Prove radius ratio Reduce respectively rest resultant right angles roots sides smooth square straight line string Subtract surface taken tangent tons tower triangle uniform velocity vertical weight whole yards
Σελίδα 121 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.
Σελίδα 182 - If two straight lines cut one another within a circle, the rectangle contained by the segments of one of them, is equal to the rectangle contained by the segments of the other.
Σελίδα 78 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Σελίδα 182 - To make a triangle of which the sides shall be equal to three given straight lines, but any two whatever of these must be greater than the third (20.
Σελίδα 182 - If a straight line be bisected, and produced to any point ; the rectangle contained by the whole line thus produced, and the part of it produced, together with the square on half the line bisected, is equal to the square on the straight line which is made up of the half and the part produced.
Σελίδα 161 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Σελίδα 182 - In right angled triangles the square on the side subtending the right angle is equal to the (sum of the) squares on the sides containing the right angle.