# First lessons in Plane Geometry. Together with an application of them to the solution of problems, etc

Carter and Hendee, 1830 - 12 من الصفحات

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الصفحة 197 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
الصفحة 94 - If two triangles have two sides of the one equal to two sides of the other, each to each, but the...
الصفحة 213 - HDG, the corresponding sides are proportional (page 70, 4thly) ; therefore we have the proportion ED : DG =AD : HD (II.) This last proportion has the first ratio common with the first proportion ; consequently the two remaining ratios are in a geometrical proportion (Theory of Prop., Prin. 3d) ; that is, we have AD : HD = DG: BD; and as, in...
الصفحة 175 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
الصفحة 178 - The perimeters of two regular polygons of the same number of sides, are to each other as their homologous sides, and their areas are to each other as the squares of those sides (Prop.
الصفحة 177 - The side of a regular hexagon inscribed in a circle is equal to the radius of the circle.
الصفحة 129 - Now, since the areas of similar polygons are to each other as the squares of their homologous sides...