Elements of Plane and Solid GeometryAmerican Book Company, 1903 - 384 σελίδες |
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Αποτελέσματα 1 - 5 από τα 100.
Σελίδα 16
... Prove Prop . I. , using this pair of triangles . D E B A C 33. EXERCISE . In the triangle ABC , AB = AC , and AD bisects the angle BAC . Prove that AD also bisects BC . Suggestion . Show by § 30 that the ABD and ADC are equal in all ...
... Prove Prop . I. , using this pair of triangles . D E B A C 33. EXERCISE . In the triangle ABC , AB = AC , and AD bisects the angle BAC . Prove that AD also bisects BC . Suggestion . Show by § 30 that the ABD and ADC are equal in all ...
Σελίδα 18
... Prove that BD bisects AC and that AB = BC . 38. EXERCISE . ABC is a △ having △ BAC A = ZBCA . AD bisects / BAC and CE bisects LBCA . Prove AD CE . = A A D E B B B Suggestion . Prove & ADC and AEC equal in all respects by § 35 . of ...
... Prove that BD bisects AC and that AB = BC . 38. EXERCISE . ABC is a △ having △ BAC A = ZBCA . AD bisects / BAC and CE bisects LBCA . Prove AD CE . = A A D E B B B Suggestion . Prove & ADC and AEC equal in all respects by § 35 . of ...
Σελίδα 21
... Prove P equally distant from A and B. Draw PA and PB . [ It is required to prove PA = PB , for PA and PB measure the distance from P to A and B respectively . ] Proof . The APAD and PBD have AD = DB ( Hypothesis ) , < 1 = < 2 ( Right ...
... Prove P equally distant from A and B. Draw PA and PB . [ It is required to prove PA = PB , for PA and PB measure the distance from P to A and B respectively . ] Proof . The APAD and PBD have AD = DB ( Hypothesis ) , < 1 = < 2 ( Right ...
Σελίδα 28
... prove later ( see § 85 ) that " if the sides of one triangle are equal respectively to the sides of another , the angles of the first triangle are equal respectively to those of the second . " Show , by drawing triangles , that the ...
... prove later ( see § 85 ) that " if the sides of one triangle are equal respectively to the sides of another , the angles of the first triangle are equal respectively to those of the second . " Show , by drawing triangles , that the ...
Σελίδα 29
... Prove that GD and DF form a straight line . 75. DEFINITION . If two lines inter- sect each other , the opposite angles formed are called vertical angles . 21 and 3 are vertical angles , as are also 22 and 24 . 76. EXERCISE . The ...
... Prove that GD and DF form a straight line . 75. DEFINITION . If two lines inter- sect each other , the opposite angles formed are called vertical angles . 21 and 3 are vertical angles , as are also 22 and 24 . 76. EXERCISE . The ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
AABC AB² ABC and DEF AC² altitude angle formed angles are equal angles equal apothem bisector bisects chord circum circumference cone Construct a triangle COROLLARY cylinder DEFINITION diagonals diameter dihedral angles divided Draw EFGH equally distant equiangular polygon equilateral triangle equivalent EXERCISE exterior angles Find frustum given circle given line given point hypotenuse inscribed angle isosceles triangle joining the middle lateral area Let ABC Let To Prove line joining medians meet middle points number of sides opposite sides parallel parallelogram parallelopiped perimeter perpendicular point of intersection polyhedron prism prolonged PROPOSITION Prove ABCD pyramid quadrilateral radii radius rectangle regular inscribed regular polygon rhombus right angles right-angled triangle SCHOLIUM secants segments Show similar polygons slant height sphere spherical square straight line surface tangent tetrahedron THEOREM trapezoid triangle ABC trihedral unequal vertex vertical angle volume Whence
Δημοφιλή αποσπάσματα
Σελίδα 167 - If two polygons are composed of the same number of triangles, similar each to each and similarly placed, the polygons are similar.
Σελίδα 139 - A line parallel to one side of a triangle divides the other two sides proportionally.
Σελίδα 187 - Any two rectangles are to each other as the products of their bases by their altitudes.
Σελίδα 202 - 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 180 - In an inscribed quadrilateral, the product of the diagonals is equal to the sum of the products of the opposite sides.
Σελίδα 90 - In the same circle, or in equal circles, equal chords are equally distant from the center; and, conversely, chords equally distant from the center are equal.
Σελίδα 195 - Since similar triangles are to each other as the squares of their homologous sides, ABC : DBE : : AB' : BD3 ; whence BD = AB J ^5| ~ AB A/— ^ — . j A150 f in -f- n The construction of Fig.
Σελίδα 129 - To express that the ratio of A to B is equal to the ratio of C to D, we write the quantities thus : A : B : : C : D ; and read, A is to B as C to D.
Σελίδα 15 - If two triangles have two sides and the included angle of one equal respectively to two sides and the included angle of the other, the triangles are equal.
Σελίδα 17 - If two triangles have two angles and the included side of one equal respectively to two angles and the included side of the other, the triangles are congruent.