The Normal Elementary Geometry: Embracing a Brief Treatise on Mensuration and Trigonometry : Designed for Academies, Seminaries, High Schools, Normal Schools, and Advanced Classes in Common Schools

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Sower, Barnes & Potts, 1868 - 275 páginas
 

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Página 42 - 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.
Página 85 - A tangent to a circle is perpendicular to the radius drawn to the point of contact.
Página 66 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.
Página 63 - The area of a parallelogram is equal to the product of its base and altitude.
Página 41 - 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.
Página 138 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Página 100 - At a given point in a straight line to erect a perpendicular to that line. Let AB be the straight line, and let c D be a given point in it.
Página 101 - Through a given point to draw a straight line parallel to a given straight line, Let A be the given point, and BC the given straight line : it is required to draw through the point A a straight line parallel to BC.
Página 81 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Página 43 - In an isosceles triangle, the angles opposite the equal sides are equal.

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