Plane GeometryCharles E. Merrill Company, 1904 - 372 σελίδες |
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Σελίδα 292
... SYMMETRY 483. Symmetry of polygons . Many of the properties 292 BOOK V. PLANE GEOMETRY.
... SYMMETRY 483. Symmetry of polygons . Many of the properties 292 BOOK V. PLANE GEOMETRY.
Σελίδα 293
Fletcher Durell. SYMMETRY 483. Symmetry of polygons . Many of the properties of regular figures can be obtained in a simple and expedi- tious way by the use of the ideas of symmetry . 484. An axis of symmetry is a line such that , if ...
Fletcher Durell. SYMMETRY 483. Symmetry of polygons . Many of the properties of regular figures can be obtained in a simple and expedi- tious way by the use of the ideas of symmetry . 484. An axis of symmetry is a line such that , if ...
Σελίδα 294
... symmetrical with respect A to an axis are two figures such that each point in the one figure has a point in the other figure symmetrical to the given point , with respect to an axis . 1 B SYMMETRY WITH RESPECT TO A POINT OR CENTER 489 ...
... symmetrical with respect A to an axis are two figures such that each point in the one figure has a point in the other figure symmetrical to the given point , with respect to an axis . 1 B SYMMETRY WITH RESPECT TO A POINT OR CENTER 489 ...
Σελίδα 295
... perimeter , is bisected at 0 , ( for P is any point on the perimeter ) . .. O is a center of symmetry for the given figure . Art . 490 . Q. E. D. EXERCISES . GROUP 48 THEOREMS CONCERNING REGULAR POLYGONS AND THE SYMMETRY 295.
... perimeter , is bisected at 0 , ( for P is any point on the perimeter ) . .. O is a center of symmetry for the given figure . Art . 490 . Q. E. D. EXERCISES . GROUP 48 THEOREMS CONCERNING REGULAR POLYGONS AND THE SYMMETRY 295.
Σελίδα 299
... symmetry ? Has it a center of symmetry ? Ex . 2. What axis of symmetry has a quadrilateral which has two pairs of equal adjacent sides ? Has such a figure a center of symmetry ? Ex . 3. A parallelogram is symmetrical with respect to the ...
... symmetry ? Has it a center of symmetry ? Ex . 2. What axis of symmetry has a quadrilateral which has two pairs of equal adjacent sides ? Has such a figure a center of symmetry ? Ex . 3. A parallelogram is symmetrical with respect to the ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acute angle adjacent angles altitude apothem base bisects chord circumference circumscribed circumscribed circle coincide construct a square Construct a triangle denoted diagonal diameter divided draw a line equal angles equal circles equiangular polygon equidistant equilateral triangle EXERCISES exterior angle figure Find the area Find the radius geometric given angle given circle given line given point given triangle greater Hence homologous sides hypotenuse inscribed angle inscribed polygon intersect isosceles trapezoid isosceles triangle LAOB length Let the pupil line drawn median method midpoint number of sides parallel lines parallelogram perimeter plane PROBLEM produced Prop pupil supply Q. E. D. Ex Q. E. D. PROPOSITION quadrilateral radii ratio rectangle regular inscribed regular polygon rhombus right angles right triangle secant segments tangent THEOREM third side trapezoid triangle ABC vertex vertex angle vertices
Δημοφιλή αποσπάσματα
Σελίδα 82 - Prove analytically that the medians of a triangle meet in a point. 70. Prove analytically that the perpendiculars from the vertices of a triangle to the opposite sides meet in a point.
Σελίδα 88 - The median to the base of an isosceles triangle is perpendicular to the base.
Σελίδα 103 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the center.
Σελίδα 211 - If from a point without a circle a secant and a tangent are drawn, the tangent is the mean proportional between the whole secant and its external segment.
Σελίδα 78 - The line joining the midpoints of two sides of a triangle is parallel to the third side and equal to one-half of it.
Σελίδα 103 - A chord is a straight line joining the extremities of an arc.
Σελίδα 47 - If two triangles have two sides of one equal respectively to two sides of the other...
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 315 - Find the area of a regular hexagon inscribed in a circle whose diameter is twelve inches.
Σελίδα 241 - If two triangles have an angle of one equal to an angle of the other, and...