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
... sector . When a circle is divided into four equal sec- tors , each of such sectors takes the name of quad- rant . 50. Divide a circle into four equal sectors , and write upon each sector its specific name . 51. Make a set of quadrants ...
... sector . When a circle is divided into four equal sec- tors , each of such sectors takes the name of quad- rant . 50. Divide a circle into four equal sectors , and write upon each sector its specific name . 51. Make a set of quadrants ...
Página 28
... sector . When a sector has an arc of 180 ° , the radii forming with each other one straight line , it has the same claim to be called a sector as it has to be called a segment , and yet it seldom takes the name of either , being ...
... sector . When a sector has an arc of 180 ° , the radii forming with each other one straight line , it has the same claim to be called a sector as it has to be called a segment , and yet it seldom takes the name of either , being ...
Página 29
... sector a different name , and yet an appropriate one . A sector which has an arc greater than a semi - circumference is said to have a reëntrant angle . 58. Make a reëntrant - angled sector . 59. Say to which class of sectors the degree ...
... sector a different name , and yet an appropriate one . A sector which has an arc greater than a semi - circumference is said to have a reëntrant angle . 58. Make a reëntrant - angled sector . 59. Say to which class of sectors the degree ...
Página 30
... sector , into two equal parts . 63. Can you divide an angle into two equal parts ? When a triangle has two only of its sides of equal length it is called an isosceles triangle . 64. Make an isosceles triangle . When a triangle has all ...
... sector , into two equal parts . 63. Can you divide an angle into two equal parts ? When a triangle has two only of its sides of equal length it is called an isosceles triangle . 64. Make an isosceles triangle . When a triangle has all ...
Página 31
... sectors so that one corresponding radius of each sector may be in one line , and so that their angles may point the same way ? 1 Of course it means two lines in the same plane . 73. Upon the same side of the same line , INVENTIONAL ...
... sectors so that one corresponding radius of each sector may be in one line , and so that their angles may point the same way ? 1 Of course it means two lines in the same plane . 73. Upon the same side of the same line , INVENTIONAL ...
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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.