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A B C acute angle adjacent altitude apothem arc A B arc or angle base bisect centre circumference comp cone construct the triangle convex surface Corollary cosec Cosine Sine Cotangent deer diagonals diameter distance divided draw equally distant equiangular equilateral equivalent feet Find the Log frustum Geom given angle given line given point given side homologous sides hypothenuse included angle incr inscribed internal angles isosceles triangle lines A B Logarithm M. M. Sine multiplied number of sides opposite side parallelogram parallelopiped perimeter perpendicular plane triangle prism PROBLEM quadrilateral radii radius ratio rectangle regular polygon right angle right pyramid right triangle right-angled triangle Scholium secant segment side opposite similar triangles slant height sphere square straight line Tang tangent THEOREM tlie trapezoid triangle ABC Trigonometry vertex
Pagina 30 - Hence -,- = -76" dn that is a" : b" = c" : dn THEOREM IX. 23 1 If any number of quantities are proportional, any antecedent is to its consequent as the sum of all the antecedents is to the sum of all the consequents. Let a : b = c : d...
Pagina 96 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
Pagina 12 - In an isosceles triangle the angles opposite the equal sides are equal.
Pagina 11 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.
Pagina 23 - If two triangles have two sides of one respectively equal to two sides of the other, and the angles contained by those sides supplementary, the triangles are equal in area.
Pagina 20 - ... polygon, is equal to twice as many right angles as the polygon has sides minus two.
Pagina 71 - The convex surface of a right prism is equal to the perimeter of its base multiplied by its altitude.
Pagina 40 - At a point 200 feet from, and on a level with the base of a tower, the angle of elevation of the top of the tower is observed to be 60į : what is the height of the tower?