Elements of GeometryH. Holt, 1881 - 399 sider |
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Resultat 1-5 av 57
Side 5
... bisect the magnitude , and is called a bisector . A B The point B bisects the line A C. C To trisect a magnitude means to divide it into three equal parts . 14. Equal Angles . Two angles ABC and DEF are said to be equal if the angle ABC ...
... bisect the magnitude , and is called a bisector . A B The point B bisects the line A C. C To trisect a magnitude means to divide it into three equal parts . 14. Equal Angles . Two angles ABC and DEF are said to be equal if the angle ABC ...
Side 7
... bisect the angle ABR . When from one magnitude a part equal to an- other is taken , that which is left is called their difference . Notation of Sum and Difference . 19. The sum of two magnitudes is expressed by writing the sign + , plus ...
... bisect the angle ABR . When from one magnitude a part equal to an- other is taken , that which is left is called their difference . Notation of Sum and Difference . 19. The sum of two magnitudes is expressed by writing the sign + , plus ...
Side 12
... in a direction the opposite of that of the motion of the hands of a watch ? 2. What is the magnitude of each of the following angles , AOC and COB ? B -C A B- C C A C B -A B- A 0 3. Draw an acute angle AOB . Bisect it . 12 GENERAL NOTIONS.
... in a direction the opposite of that of the motion of the hands of a watch ? 2. What is the magnitude of each of the following angles , AOC and COB ? B -C A B- C C A C B -A B- A 0 3. Draw an acute angle AOB . Bisect it . 12 GENERAL NOTIONS.
Side 13
... bisect it . 6. Draw a straight angle and bisect it . Draw another and trisect it . 7. Draw a reflex angle and bisect it on the convex side . Then bisect the conjugate angle on the other side . Estimate the number of degrees in each of ...
... bisect it . 6. Draw a straight angle and bisect it . Draw another and trisect it . 7. Draw a reflex angle and bisect it on the convex side . Then bisect the conjugate angle on the other side . Estimate the number of degrees in each of ...
Side 22
... bisect it . To enunciate the hypothesis we call A Р B one end of the line A and the other end B , and the point of bisection 0 . Then the hypothesis means that the point O is equally distant from A and B. The conclusion asserts that ...
... bisect it . To enunciate the hypothesis we call A Р B one end of the line A and the other end B , and the point of bisection 0 . Then the hypothesis means that the point O is equally distant from A and B. The conclusion asserts that ...
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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.