# The Elements of Plane Geometry ...

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### 目次

 Syllabus of Geometrical Constructions 9 The Straight Line 15 Triangles 24 Parallels and Parallelograms 49 Problems 69
 Loci 84 Definitions Axioms Postulates 94 Equality of Areas 101 Problems 126 Definitions 138

### 人気のある引用

27 ページ - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
70 ページ - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
56 ページ - ... is equal to twice as many right angles as the polygon
101 ページ - Prove that parallelograms on the same base and between the same parallels are equal in area.
35 ページ - Any two sides of a triangle are together greater than the third side.
26 ページ - The lines drawn from the extremities of the base of an isosceles triangle to the middle points of the opposite sides are equal.
70 ページ - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
85 ページ - The locus of a point at a given distance from a given point is the circumference described from the point with the given distance as radius.
42 ページ - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
110 ページ - Iff a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.