Wentworth's Plane Geometry

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Ginn, 1910 - 287 sider
 

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Side 7 - The line joining the midpoints of two sides of a triangle is parallel to the third side and equal to one-half of it.
Side 109 - Two triangles having 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 7 - America, but know that we are alive, that two and two make four, and that the sum of any two sides of a triangle is greater than the third side.
Side 108 - If in a right triangle a perpendicular is drawn from the vertex of the right angle to the hypotenuse : I.
Side 32 - In the same circle or in equal circles, if two chords are unequally distant from the center, they are unequal, and the chord at the less distance is the greater.
Side 83 - If the product of two quantities is equal to the product of two others, either two may be made the extremes of a proportion in which the other two are made the means.
Side 8 - If two triangles have two sides of the one equal respectively to two sides of the other, but the included angle of the first greater than the included angle of the second, then the third side of the first is greater than the third side of the second. Given A ABC and A'B'C...
Side 7 - 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.
Side 108 - 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.

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