# Elements of Geometry

Hilliard and Metcalf, 1825 - 224 уелЯдет
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УелЯдб 9 - 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.
УелЯдб 44 - Divide the first term of the dividend by the first term of the divisor, and write the result as the first term of the quotient. Multiply the whole divisor by the first term of the quotient, and subtract the product from the dividend.
УелЯдб 63 - 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. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.
УелЯдб 101 - Which proves that the square of a number composed of tens and units, contains the square of the tens plus twice the product of the tens by the units, plus the square of the units.
УелЯдб 8 - Any side of a triangle is less than the sum of the other two sides...
УелЯдб 122 - ... is negative in the second member, and greater than the square of half the coefficient of the first power of the unknown quantity, this equation can have only imaginary roots.
УелЯдб 180 - CD, &c., taken together, make up the perimeter of the prism's base : hence the sum of these rectangles, or the convex surface of the prism, is equal to the perimeter of its base multiplied by its altitude.
УелЯдб 54 - The sum of the squares on the sides of a parallelogram is equal to the sum of the squares on the diagonals.
УелЯдб 185 - The convex surface of a cone is equal to the circumference of the base multiplied by half the slant height.
УелЯдб 164 - If two triangles have two sides and the inchtded angle of the one respectively equal to two sides and the included angle of the other, the two triangles are equal in all respects.