Elements of GeometryGinn, Heath, & Company, 1879 - 250 σελίδες |
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Σελίδα iii
... Hence , with a very large proportion of beginners in Geometry , it depends mainly upon the form in which the subject is presented whether they pursue the study with indifference , not to say aversion , or with increasing interest and ...
... Hence , with a very large proportion of beginners in Geometry , it depends mainly upon the form in which the subject is presented whether they pursue the study with indifference , not to say aversion , or with increasing interest and ...
Σελίδα 4
... Hence a solid extends in all direc- tions . A solid may be conceived as generated by a surface in motion . Thus , in the diagram , let the upright surface ABCD move to the right to A B the position EFHK . The points . A , B , C , and D ...
... Hence a solid extends in all direc- tions . A solid may be conceived as generated by a surface in motion . Thus , in the diagram , let the upright surface ABCD move to the right to A B the position EFHK . The points . A , B , C , and D ...
Σελίδα 6
... Hence , all straight lines which pass through the same point in the same direction coincide . Between two points one , and but one , straight line can be drawn ; that is , a straight line is determined in position if two of its points ...
... Hence , all straight lines which pass through the same point in the same direction coincide . Between two points one , and but one , straight line can be drawn ; that is , a straight line is determined in position if two of its points ...
Σελίδα 7
... Hence , every straight line , as A B , A directions , namely from A toward B , which is expressed by say- ing line AB , and from B toward A , which is expressed by saying line B A. A B с 20. If a straight line change its magnitude , it ...
... Hence , every straight line , as A B , A directions , namely from A toward B , which is expressed by say- ing line AB , and from B toward A , which is expressed by saying line B A. A B с 20. If a straight line change its magnitude , it ...
Σελίδα 10
... Hence the whole angular magnitude about a point in a plane is equal to four right angles , and the angular magnitude about a point on one side of a straight line drawn through that point is equal to two right angles . D E C B D B H A ...
... Hence the whole angular magnitude about a point in a plane is equal to four right angles , and the angular magnitude about a point on one side of a straight line drawn through that point is equal to two right angles . D E C B D B H A ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
A B C AABC AACB ABCD acute adjacent angles alt.-int altitude arc A B base bisect centre circumference circumscribed coincide COROLLARY describe an arc diagonals diameter divided Draw equal arcs equal distances equal respectively equiangular polygon equilateral equilateral polygon exterior angles figure Geometry given circle given line given point given straight line greater homologous sides hypotenuse Iden isosceles triangle Let A B limit line A B measured by arc middle point number of sides parallelogram perimeter perpendicular PHILLIPS EXETER ACADEMY plane PROBLEM prove Q. E. D. PROPOSITION quadrilateral quantities radii radius equal ratio rect rectangles regular inscribed regular polygon required to construct rhombus right angles right triangle SCHOLIUM segment shortest side sides of equal similar polygons subtend tangent THEOREM third side triangle ABC variable vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 144 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.
Σελίδα 38 - 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.
Σελίδα 134 - The first of four magnitudes is said to have the same ratio to the second which the third has to the fourth, when...
Σελίδα 200 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 173 - Any two rectangles are to each other as the products of their bases by their altitudes.
Σελίδα 159 - In any triangle the product of two sides is equal to the product of the diameter...
Σελίδα 132 - In a series of equal ratios, the sum of the antecedents is to the sum of the consequents as any antecedent is to its consequent.
Σελίδα 70 - I) is a parallelogram, E and F the middle points of AD and BC respectively ; show that BE and DF will trisect the diagonal A C.
Σελίδα 48 - If two triangles have two sides of one equal, respectively, to two sides of the other, but the included angle of the first greater than the included angle of the second, the third side of the first is greater than the third side of the second...
Σελίδα 81 - A straight line perpendicular to a radius at its extremity is a tangent to the circle. Let MB be perpendicular to the radius OA at A.