Inventional Geometry: A Series of Problems Intended to Familiarize the Pupil with Geometrical Conceptions, and to Exercise His Inventive FacultyD. Appleton and Company, 1886 - 97 páginas |
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Página 34
... regular rhombus ? 82. Can you make a rectangle ? ' 83. Can you make a rhomboid ? 84. Can you make a trapezoid ? 85 ... regular polygon . A polygon that has five sides is called a pen- tagon . 1 1 Rectangles are sometimes called oblongs ...
... regular rhombus ? 82. Can you make a rectangle ? ' 83. Can you make a rhomboid ? 84. Can you make a trapezoid ? 85 ... regular polygon . A polygon that has five sides is called a pen- tagon . 1 1 Rectangles are sometimes called oblongs ...
Página 36
... , and underneath state the number of degrees that the angle of an octant contains . 97. Make a regular octagon in a circle . That point in a square which is equally dis tant from the sides of that square , and also 36 INVENTIONAL GEOMETRY .
... , and underneath state the number of degrees that the angle of an octant contains . 97. Make a regular octagon in a circle . That point in a square which is equally dis tant from the sides of that square , and also 36 INVENTIONAL GEOMETRY .
Página 41
... regular dodecagon in a circle ? 129. Can you show how many squares may be made to touch at one point ? You recollect that plane figure that has the fewest lines possible for its boundaries . 130. Of how few plane surfaces can you make a ...
... regular dodecagon in a circle ? 129. Can you show how many squares may be made to touch at one point ? You recollect that plane figure that has the fewest lines possible for its boundaries . 130. Of how few plane surfaces can you make a ...
Página 65
... tangent to which arc , is equal to the radius of the line of tangents . 268. Make , by the line of tangents , angles of 20 ° , 40 ° , 75 ° , and 80 ° . That solid whose faces are six equal and regular rhombuses INVENTIONAL GEOMETRY . 65.
... tangent to which arc , is equal to the radius of the line of tangents . 268. Make , by the line of tangents , angles of 20 ° , 40 ° , 75 ° , and 80 ° . That solid whose faces are six equal and regular rhombuses INVENTIONAL GEOMETRY . 65.
Página 66
... regular rhombuses is called a regular rhombo- hedron . 269. Make in card a regular rhombohedron , show how the sides are adjusted to fit , and give a sketch of it when made . A tangent to the complement of an arc is called the ...
... regular rhombuses is called a regular rhombo- hedron . 269. Make in card a regular rhombohedron , show how the sides are adjusted to fit , and give a sketch of it when made . A tangent to the complement of an arc is called the ...
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adjacent angles angular points APPLETON arc is called arithmetic arithmetic mean arrange the surfaces axis BALFOUR STEWART base Book-Keeping boundaries breadth card a hollow circumference construct cube curve diameter dimensions divide a circle divide a line divide an equilateral dodecagon Double-Entry Book-Keeping duodecimals ellipse equal and similar equal sectors equilateral triangle find the area four equal FRANKLIN TAYLOR Geology geometry Give a plan give a sketch gles HERBERT SPENCER hexahedron icosahedron Illustrations Inventional Geometry isosceles triangle length line drawn line of chords line of sines line of tangents means nonagon number of degrees obtuse angle octahedron orthoëpists pentagon piece of card place a circle place a hexagon place a square polygon Prof protractor pupil pyramid quadrant quadrilaterals radii radius rectangle reëntrant angle rhomboid rhombus right-angled triangle Science Primer secant sides is called solid square inches square yard takes the name tetrahedron trapezium versed sine write its name zoid