A Text-book of GeometryGinn, 1888 - 386 σελίδες |
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Αποτελέσματα 1 - 5 από τα 23.
Σελίδα 10
... four right an the angular magnitude about a point on one side of line drawn through that point is equal to one straig or two right angles . Angles are magnitudes that can be added and su they may also be multiplied and divided by a ...
... four right an the angular magnitude about a point on one side of line drawn through that point is equal to one straig or two right angles . Angles are magnitudes that can be added and su they may also be multiplied and divided by a ...
Σελίδα 14
... four pa ( 1 ) The analysis , or course of thought by whi struction of the required figure is discovered ; ( 2 ) The construction of the figure with the aid of compasses ; ( 3 ) The proof that the figure satisfies all the gi tions ; O B ...
... four pa ( 1 ) The analysis , or course of thought by whi struction of the required figure is discovered ; ( 2 ) The construction of the figure with the aid of compasses ; ( 3 ) The proof that the figure satisfies all the gi tions ; O B ...
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 20
... we may prove ZACO Z PCB . 96. COR . If one of the four angles formed by the of two straight lines is a right angle , the other thre right angles . aight 97. From a point without a straight line one. PROPOSITION IV . THEOREM .
... we may prove ZACO Z PCB . 96. COR . If one of the four angles formed by the of two straight lines is a right angle , the other thre right angles . aight 97. From a point without a straight line one. PROPOSITION IV . THEOREM .
Σελίδα 56
George Albert Wentworth. 165. A quadrilateral is a portion of a plane b four straight lines . The bounding lines are the sides , the angles forme sides are the angles , and the vertices of these ang vertices , of the quadrilateral . 166 ...
George Albert Wentworth. 165. A quadrilateral is a portion of a plane b four straight lines . The bounding lines are the sides , the angles forme sides are the angles , and the vertices of these ang vertices , of the quadrilateral . 166 ...
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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.