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 35
... octagon . A polygon that has nine sides is called a nonagon . A polygon that has ten sides is called a dec- agon . A polygon that has eleven sides is called an undecagon . A polygon that has twelve sides is called a dodecagon . You have ...
... octagon . A polygon that has nine sides is called a nonagon . A polygon that has ten sides is called a dec- agon . A polygon that has eleven sides is called an undecagon . A polygon that has twelve sides is called a dodecagon . You have ...
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 39
... octagon may touch vertically one angle of the other ? You have divided a line into two equal parts . 114. Can you divide a line into four equal parts ? 115. Make a scale of inches , and with its assistance make a rectangle whose length ...
... octagon may touch vertically one angle of the other ? You have divided a line into two equal parts . 114. Can you divide a line into four equal parts ? 115. Make a scale of inches , and with its assistance make a rectangle whose length ...
Página 41
... octagon may coincide with one side of the other ? You have divided a sector into two equal sectors , and an angle into two equal angles . 126. Can you divide a sector into four equal sectors , and an angle into four equal angles ? 127 ...
... octagon may coincide with one side of the other ? You have divided a sector into two equal sectors , and an angle into two equal angles . 126. Can you divide a sector into four equal sectors , and an angle into four equal angles ? 127 ...
Página 48
... octagon , with one side given ? 172. Is it possible that any triangle can be of such a form that , when divided in a certain way into two parts equal to each other , such parts shall have a form similar to that of the original triangle ...
... octagon , with one side given ? 172. Is it possible that any triangle can be of such a form that , when divided in a certain way into two parts equal to each other , such parts shall have a form similar to that of the original triangle ...
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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