Plane and Solid GeometryCharles E. Merrill Company, 1911 - 546 σελίδες |
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Σελίδα 8
... parallel , or , is parallel to . Post . • Ils parallels . Prop . Rt . • L , △ angle , angles A , A triangle , triangles . O , 3 O , circle , circles . parallelogram , parallelograms . Sug . Sup . St. • 3 • postulate . proposition ...
... parallel , or , is parallel to . Post . • Ils parallels . Prop . Rt . • L , △ angle , angles A , A triangle , triangles . O , 3 O , circle , circles . parallelogram , parallelograms . Sug . Sup . St. • 3 • postulate . proposition ...
Σελίδα 24
... parallel , " the hypothesis is , that two given lines are perpendicular to another given line ; the conclusion is , that the two given lines are parallel . 60. The converse of a proposition is another proposi- tion formed by ...
... parallel , " the hypothesis is , that two given lines are perpendicular to another given line ; the conclusion is , that the two given lines are parallel . 60. The converse of a proposition is another proposi- tion formed by ...
Σελίδα 53
... parallel lines ? Three parallel lines ? ( See Art . 47. ) Ex . 5. Are two triangles equal if three angles of one equal the corresponding three angles of the other ? Illustrate by drawing a figure . Ex . 6. Draw three isosceles triangles ...
... parallel lines ? Three parallel lines ? ( See Art . 47. ) Ex . 5. Are two triangles equal if three angles of one equal the corresponding three angles of the other ? Illustrate by drawing a figure . Ex . 6. Draw three isosceles triangles ...
Σελίδα 55
... ; also name another pair of exterior - interior angles on the same side of the transversal ; also name a pair of interior angles on the same side of the trans- versal . 120. DEF . PARALLEL LINES Parallel lines have already been LOCI 55.
... ; also name another pair of exterior - interior angles on the same side of the transversal ; also name a pair of interior angles on the same side of the trans- versal . 120. DEF . PARALLEL LINES Parallel lines have already been LOCI 55.
Σελίδα 56
Fletcher Durell. 120. DEF . PARALLEL LINES Parallel lines have already been defined ( Art . 41 ) as straight lines which lie in the same plane and do not meet , however far they be produced . What is the fundamental axiom concerning ...
Fletcher Durell. 120. DEF . PARALLEL LINES Parallel lines have already been defined ( Art . 41 ) as straight lines which lie in the same plane and do not meet , however far they be produced . What is the fundamental axiom concerning ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD altitude base bisector bisects chord circumference circumscribed coincide cone of revolution denoted diagonal diameter dihedral angle divided equidistant equilateral triangle equivalent exterior angle figure Find the area Find the radius frustum geometric given circle given line given point Hence homologous sides hypotenuse intersect isosceles trapezoid isosceles triangle lateral area lateral edges Let the pupil line drawn measure midpoints number of sides opposite parallel lines parallelogram parallelopiped pass a plane perimeter perpendicular plane MN plane parallel polyhedron prism prismatoid produced proportional pyramid Q. E. D. Ex Q. E. D. PROPOSITION quadrilateral radii ratio rectangle regular polygon rhombus right angles right triangle secant segments similar slant height sphere spherical polygon spherical triangle square pyramid surface symmetrical tangent tetrahedron THEOREM trapezoid triangle ABC trihedral vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 241 - If two triangles have an angle of one equal to an angle of the other, and...
Σελίδα 103 - A chord is a straight line joining the extremities of an arc.
Σελίδα 54 - Every point in the bisector of an angle is equidistant from the sides of the angle. Hyp. Z DAB = Z DAC and 0 is any point in AD. To prove 0 is equidistant from AB and AC. Draw OP _L AB and OP' _L AC, and prove the equality of the two triangles.
Σελίδα 82 - The perpendiculars from the vertices of a triangle to the opposite sides meet in a point.
Σελίδα 114 - In the same circle or in equal circles, if two chords are unequal, they are unequally distant from the center, and the greater chord is at the less distance.
Σελίδα 47 - If two triangles have two sides of one equal respectively to two sides of the other...
Σελίδα 416 - Every section of a circular cone made by a plane parallel to the base is a circle. Let the section abcd of the circular cone S-ABCD be parallel to the base. To prove that abcd is a circle.
Σελίδα 35 - The perpendicular is the shortest straight line that can be drawn from a given point to a given straight line...
Σελίδα 193 - ... they have an angle of one equal to an angle of the other and the including sides are proportional; (c) their sides are respectively proportional.
Σελίδα 450 - If two angles of a spherical triangle are equal, the sides opposite these angles are equal and the triangle is isosceles. Given the spherical triangle ABC, with angle B equal to angle C. To prove that AC = AB. Proof. Let A A'B'C ' be the polar triangle of A ABC.