Elements of GeometryH. Holt, 1881 - 399 sider |
Inni boken
Resultat 1-5 av 80
Side 2
... straight line . A curve line . Def . A straight line is one which has the same direction throughout its whole length . Def . A curve line is one no part of which is straight . The Point . 5. Def . A point is that which is supposed to ...
... straight line . A curve line . Def . A straight line is one which has the same direction throughout its whole length . Def . A curve line is one no part of which is straight . The Point . 5. Def . A point is that which is supposed to ...
Side 3
... straight line between any two of its points lies wholly on the surface . A plane is perfectly flat and even , like the surface of still water , or of a smooth floor . Geometric Figures . 8. Def . A figure is any definite combination of ...
... straight line between any two of its points lies wholly on the surface . A plane is perfectly flat and even , like the surface of still water , or of a smooth floor . Geometric Figures . 8. Def . A figure is any definite combination of ...
Side 7
Simon Newcomb. The sum of two or more straight lines is the line obtained by putting them end to end in the same straight line . The sum of two angles ABC and PQR is the angle ABR R R P C B A C B Sum of angles . A formed by applying the ...
Simon Newcomb. The sum of two or more straight lines is the line obtained by putting them end to end in the same straight line . The sum of two angles ABC and PQR is the angle ABR R R P C B A C B Sum of angles . A formed by applying the ...
Side 8
Simon Newcomb. Kinds of Angles . 20. Def . When a straight line AB standing on A another straight line CD makes the angles ABC and ABD equal , each of these C- B Right angles . angles is called a right angle , and the line AB is D said ...
Simon Newcomb. Kinds of Angles . 20. Def . When a straight line AB standing on A another straight line CD makes the angles ABC and ABD equal , each of these C- B Right angles . angles is called a right angle , and the line AB is D said ...
Side 9
... straight angle AOE , be- cause we cut the figure so that AOE should be in a straight line . On adding it again we shall have the convex angle AOF . This angle will be greater than a straight angle if we count it round in the E direction ...
... straight angle AOE , be- cause we cut the figure so that AOE should be in a straight line . On adding it again we shall have the convex angle AOF . This angle will be greater than a straight angle if we count it round in the E direction ...
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Vanlige uttrykk og setninger
ABCD adjacent angles altitude angle AOB angle arc base bisect centre chord circle circumscribed coincide Conclusion cone conical surface construction corresponding curve diagonals diameter dicular dihedral angle distance divided draw edge angle ellipse equal angles equally distant exterior angle face angles figure foci frustrum geometry given greater Hence hyperbola Hypothesis identically equal indefinitely inscribed isosceles Join length line of intersection locus magnitude meet middle point number of sides opposite angles opposite sides parabola parallel planes parallelogram parallelopiped pass perpen plane MN point of intersection polyhedral angle polyhedron prism Proof pyramid Q.E.D. Corollary Q.E.D. THEOREM quadrilateral radii radius ratio rect rectangle reflex angle regular polygon right angles Scholium segments slant height solid sphere spherical triangle square straight angle straight line surface tangent trapezoid triangles are identically vertex vertices
Populære avsnitt
Side 146 - In an obtuse-angled triangle the square on the side opposite the obtuse angle is greater than the sum of the squares on the other two sides by twice the rectangle contained by either side and the projection on it of the other side.
Side 184 - 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 44 - Every point in the bisector of an angle is equally distant from the sides of the angle...
Side 149 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Side 45 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.
Side 103 - A rectilineal figure is said to be described about a circle, when each side of the circumscribed figure touches the circumference of the circle. V. In like manner, a circle is said to be inscribed...
Side 235 - ten decimals are sufficient to give the circumference of the earth to the fraction of an inch, and thirty decimals would give the circumference of the whole visible universe to a quantity imperceptible with the most powerful microscope.
Side 90 - The sum of the three straight lines drawn from any point within a triangle to the three vertices, is less than the sum and greater than the half sum of the three sides of the triangle (I . 33, 66).
Side 168 - Four quantities are in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth.
Side 196 - If four straight lines be proportionals, the rectangle contained by the extremes is equal to the rectangle contained by the means.