The Eclectic School Geometry: A Revision of Evan's School Geometry

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Van Antwerp, Bragg, 1884 - 155 sider
 

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Side 104 - If from a point without a circle, a tangent and a secant be drawn, the tangent will be a mean proportional between the secant and its external segment.
Side 32 - If two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the two triangles will be equal.
Side 54 - The circumference of every circle is supposed to' be divided into 360 equal parts, called degrees ; each degree into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated by the characters °, ', ". Thus 23° 14' 35" is read 23 degrees, 14 minutes, and 35 seconds.
Side 42 - The square described on the hypothenuse of a right-angled triangle is equivalent to the sum of the squares described on the other two sides.
Side 107 - The areas of two circles are to each other as the squares of their radii. For, if S and S' denote the areas, and R and R
Side 147 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles.
Side 140 - A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed.
Side 50 - The area of a regular polygon is equal to half the product of its apothem and perimeter.
Side 141 - The altitude of a pyramid or cone is the perpendicular distance from the ve~rtex to the base.
Side 39 - The area of a rectangle is equal to the product of its base and altitude.

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