Inventional Geometry: A Series of Problems : Intended to Familiarize the Pupil with Geometrical Conceptions, and to Exercise His Inventive FacultyAmerican Book Company, 1876 - 97 páginas |
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Página 27
... quadrants , and write in each angle its specific name . To compare sectors of different magnitudes with each other , geometricians have found it convenient to imagine every circle to be divided into three hundred and sixty equal sectors ...
... quadrants , and write in each angle its specific name . To compare sectors of different magnitudes with each other , geometricians have found it convenient to imagine every circle to be divided into three hundred and sixty equal sectors ...
Página 28
... quadrants , and write in each angle how many degrees it contains . All angles greater or less than the angle of a quadrant are called oblique angles . When an oblique angle is less than a quad- rantal angle , that is less than a right ...
... quadrants , and write in each angle how many degrees it contains . All angles greater or less than the angle of a quadrant are called oblique angles . When an oblique angle is less than a quad- rantal angle , that is less than a right ...
Página 55
... quadrant to which all the chords belong ; that is , which is equal to the radius of the line of chords . 218. Say which chord is equal to the radius of the line of chords . 219. Make , by the line of chords , angles of 26 ° , 32 ° , 75 ...
... quadrant to which all the chords belong ; that is , which is equal to the radius of the line of chords . 218. Say which chord is equal to the radius of the line of chords . 219. Make , by the line of chords , angles of 26 ° , 32 ° , 75 ...
Página 69
... quadrant . If to one extremity of an arc , not greater than that of a quadrant , there be drawn a radius , and if from the other extremity there be let fall a perpendicular to that radius , such perpendicular is called a sine of that ...
... quadrant . If to one extremity of an arc , not greater than that of a quadrant , there be drawn a radius , and if from the other extremity there be let fall a perpendicular to that radius , such perpendicular is called a sine of that ...
Página 71
... quadrant ? 309. Give a figure of a symmetrical trape- zoid whose parallel sides are 40 and 20 , and the perpendicular distance between them 60 ; measure its angles by the line of sines , and cal- culate the area . 310. Show by a figure ...
... quadrant ? 309. Give a figure of a symmetrical trape- zoid whose parallel sides are 40 and 20 , and the perpendicular distance between them 60 ; measure its angles by the line of sines , and cal- culate the area . 310. Show by a figure ...
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Términos y frases comunes
adjacent angles AMERICAN BOOK COMPANY angular points arc is called arithmetic arithmetic mean arrange the surfaces BALFOUR STEWART Barnes's Brief History base boundaries breadth card a hollow cents circumference Cloth construct cube curve diameter dimensions divide a circle divide a line divide an equilateral dodecagon duodecimals EDWARD EGGLESTON ellipse equal and similar equal sectors equilateral triangle find the area four equal FRANKLIN TAYLOR geometry Give a plan give a sketch gles HERBERT SPENCER hexahedron icosahedron illustrated Inventional Geometry isosceles triangle length line drawn line of chords line of sines line of tangents nonagon number of degrees octagon octahedron pentagon perpendicular piece of card place a circle place a hexagon place a square polygon protractor pupil pyramid quadrant quadrilaterals radii radius ratio rectangle reëntrant angle rhomboid rhombus right angle right-angled triangle secant sides is called solid square inches takes the name tetrahedron Thalheimer's touch trapezium versed sine write its name zoid
Pasajes populares
Página 41 - TRIANGLES upon the same base, and between the same parallels, are equal to one another.
Página 21 - All arcs of circles that are not so great as a semi-circumference are called less arcs. A line that joins the extremities of an arc is called the chord of that arc. When two radii connect together any two points in the circumference of a circle which are on exactly the opposite sides of the centre, they make a chord, which is called the diameter of the circle, and such diameter divides the circle into two equal segments, 1 which take the name of semicircles.