Elements of Plane Geometry

American book Company, 1901 - 247 σελίδες

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Περιεχόμενα

 Abbreviations list of 29 8 PRELIMINARY DEFINITIONS 9 Adjacent angles 15 ADDITIONAL EXERCISES 71 Equiangular polygon 152 76 inscribed 354 79 Equilateral polygon 152 96 Equivalent polygons 561 113
 Hexagon 152 168 ADDITIONAL EXERCISES 173 Hypotenuse 43 178 ADDITIONAL EXERCISES 213 Polygon 152 220 Interior angles 113 227 Arc 21 230 Axioms list of 27 240

Δημοφιλή αποσπάσματα

Σελίδα 68 - 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.
Σελίδα 163 - If two chords intersect within a circle, the product of the segments of one is equal to the product of the segments of the other.
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 120 - If a quadrilateral is circumscribed about a circle, the sum of one pair of opposite sides is equal to the sum of the other pair.
Σελίδα 72 - The lines joining the middle points of the opposite sides of a quadrilateral bisect each other.
Σελίδα 203 - In any obtuse triangle, the square of the side opposite the obtuse angle is equal to the sum of the squares of the other two sides, increased by twice the product of one of these sides and the projection of the other side upon it.
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 221 - Tangents to a circle at the middle points of the arcs subtended by the sides of a regular inscribed polygon...
Σελίδα 11 - 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 61 - If the diagonals of a quadrilateral bisect each other, the figure is a parallelogram.