A Text-book of GeometryGinn, 1888 - 386 σελίδες |
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Αποτελέσματα 1 - 5 από τα 21.
Σελίδα 18
... four right angles . The sum of all the angles about a point on the sa straight line passing through the point , is equal to angle , or two right angles . - sides nts of 93. CONVERSELY : If two adjacent PROPOSITION II . THEOREM .
... four right angles . The sum of all the angles about a point on the sa straight line passing through the point , is equal to angle , or two right angles . - sides nts of 93. CONVERSELY : If two adjacent PROPOSITION II . THEOREM .
Σελίδα 19
George Albert Wentworth. - sides nts of 93. CONVERSELY : If two adjacent angles are supple- ments of each other , their exterior sides lie in the same straight line . A C B F jacent Hyp . Then § 46 Ax . 9 But Ax . 1 Let the adjacent ...
George Albert Wentworth. - sides nts of 93. CONVERSELY : If two adjacent angles are supple- ments of each other , their exterior sides lie in the same straight line . A C B F jacent Hyp . Then § 46 Ax . 9 But Ax . 1 Let the adjacent ...
Σελίδα 24
... comp it is one - fourth of its complement . Ex . 2. Find the value of an angle if it is double its supple is one - third of its supplement . third equal . 105. CONVERSELY : When two straight lines. PROPOSITION VIII . THEOREM .
... comp it is one - fourth of its complement . Ex . 2. Find the value of an angle if it is double its supple is one - third of its supplement . third equal . 105. CONVERSELY : When two straight lines. PROPOSITION VIII . THEOREM .
Σελίδα 25
George Albert Wentworth. third equal . 105. CONVERSELY : When two straight lines are cut by a third straight line , if the alternate interior an- gles are equal , the two straight lines are parallel . E M A ut by H B N AD § 102 fall ...
George Albert Wentworth. third equal . 105. CONVERSELY : When two straight lines are cut by a third straight line , if the alternate interior an- gles are equal , the two straight lines are parallel . E M A ut by H B N AD § 102 fall ...
Σελίδα 26
... forms equal the sides of the given angle . Ex . 5. If the bisectors of two adjacent angles are perpe each other , the adjacent angles are supplementary . ight 108. CONVERSELY : When two straight lines are cut. PROPOSITION X. THEOREM .
... forms equal the sides of the given angle . Ex . 5. If the bisectors of two adjacent angles are perpe each other , the adjacent angles are supplementary . ight 108. CONVERSELY : When two straight lines are cut. PROPOSITION X. THEOREM .
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.