A Text-book of GeometryGinn, 1888 - 386 σελίδες |
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Αποτελέσματα 1 - 5 από τα 18.
Σελίδα 7
... difference in direction of two lines . The two lines are called the sides of the angle , and the point where the sides meet is called the vertex of the angle . 41. If there is but one angle at a given vertex , it is designated by a cap ...
... difference in direction of two lines . The two lines are called the sides of the angle , and the point where the sides meet is called the vertex of the angle . 41. If there is but one angle at a given vertex , it is designated by a cap ...
Σελίδα 11
... be moved from one place to another without altering its length ; that an angle may be taken up , turned over , and put down , without eltorin the difference in direction of its sides . E -D B FIG . 18 . G This method METHOD OF ...
... be moved from one place to another without altering its length ; that an angle may be taken up , turned over , and put down , without eltorin the difference in direction of its sides . E -D B FIG . 18 . G This method METHOD OF ...
Σελίδα 12
... will together equal the angle ABH . If the vertex E is placed on B , and the side ED c angle DEF will take the position ABF , and the at will be the difference between the angles ABC and e same Let -tex E - angle etween ss than.
... will together equal the angle ABH . If the vertex E is placed on B , and the side ED c angle DEF will take the position ABF , and the at will be the difference between the angles ABC and e same Let -tex E - angle etween ss than.
Σελίδα 41
... difference is less than the third side . In the △ ABC ( Fig . 1 ) , AB + BC > AC , for a straight line is the shortest distance between two points ; and by taking OWOT RC from both sides ΛΑ ΛΑ BO 10 BOAR 138. The sum of the three ...
... difference is less than the third side . In the △ ABC ( Fig . 1 ) , AB + BC > AC , for a straight line is the shortest distance between two points ; and by taking OWOT RC from both sides ΛΑ ΛΑ BO 10 BOAR 138. The sum of the three ...
Σελίδα 73
... difference of the bases . 63. In an isosceles trapezoid each base makes equal angles with the legs . HINT . Draw CE | DB . 64. In an isosceles trapezoid the opposite angles are supplementary . A E B 65. If the angles at the base of a ...
... difference of the bases . 63. In an isosceles trapezoid each base makes equal angles with the legs . HINT . Draw CE | DB . 64. In an isosceles trapezoid the opposite angles are supplementary . A E B 65. If the angles at the base of a ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
AB² ABCD AC² acute angle adjacent angles altitude angle formed angles are equal base bisector bisects called centre chord circumference circumscribed coincide construct a square decagon diagonals diameter Draw equal respectively equiangular equiangular polygon equidistant equilateral polygon equilateral triangle exterior angle feet figure Find the area given circle given line given point given straight line given triangle greater Hence homologous sides hypotenuse inches intersecting isosceles triangle legs length line drawn line joining measured by arc middle points number of sides obtuse opposite sides parallel parallelogram perimeter perpendicular PROPOSITION prove Proof quadrilateral radii ratio rectangle regular inscribed regular polygon rhombus right angle right triangle SCHOLIUM secant segments similar polygons square equivalent straight angle subtended tangent THEOREM third side trapezoid triangle ABC triangle is equal vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 46 - 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 69 - The exterior angles of a polygon, made by producing each of its sides in succession, are together equal to four right angles.
Σελίδα 187 - Two triangles having 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.
Σελίδα 64 - The straight line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of it 46 INTERCEPTS BY PARALLEL LINES.
Σελίδα 201 - To construct a parallelogram equivalent to a given square, and having the sum of its base and altitude equal to a given line.
Σελίδα 215 - The perimeters of two regular polygons of the same number of sides, are to each other as their homologous sides, and their areas are to each other as the squares of those sides (Prop.
Σελίδα 161 - In any triangle, the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides diminished by twice the product of one of those sides and the projection of the other upon that side.
Σελίδα 135 - 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 156 - If in a right triangle a perpendicular is drawn from the vertex of the right angle to the hypotenuse : I.
Σελίδα 15 - LET it be granted that a straight line may be drawn from any one point to any other point. 2. That a terminated straight line may be produced to any length in a straight line. 3.