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
... polygon , which means many - angled ; and when a polygon has all its sides equal , and all its angles equal , it is called a regular polygon . A polygon that has five sides is called a pen- tagon . 1 1 Rectangles are sometimes called ...
... polygon , which means many - angled ; and when a polygon has all its sides equal , and all its angles equal , it is called a regular polygon . A polygon that has five sides is called a pen- tagon . 1 1 Rectangles are sometimes called ...
Página 35
... polygon that has six sides is called a hex- agon . A polygon that has seven sides is called a heptagon . A polygon that has eight sides is called an octagon . A polygon that has nine sides is called a nonagon . A polygon that has ten ...
... polygon that has six sides is called a hex- agon . A polygon that has seven sides is called a heptagon . A polygon that has eight sides is called an octagon . A polygon that has nine sides is called a nonagon . A polygon that has ten ...
Página 61
... polygon ; and the angle made by any two contiguous sides of a polygon is called the angle of the polygon . 245. Make an octagon in a circle , measure by a line of chords the angle at the centre and the angle of the octagon , and prove ...
... polygon ; and the angle made by any two contiguous sides of a polygon is called the angle of the polygon . 245. Make an octagon in a circle , measure by a line of chords the angle at the centre and the angle of the octagon , and prove ...
Página 72
... polygon similar to another , and twice the size ? 315. Can you make an irregular polygon similar to another , and half the size ? 316. Can you change a square to an obtuse- angled isosceles triangle ? 317. Can you show by a figure how ...
... polygon similar to another , and twice the size ? 315. Can you make an irregular polygon similar to another , and half the size ? 316. Can you change a square to an obtuse- angled isosceles triangle ? 317. Can you show by a figure how ...
Página 88
... polygon , the in- terior of which may , by four lines , be divided into nine figures ; one being a square , four re- ciprocal rectangles , and the remaining four re- ciprocal triangles . the 411. Geometricians have asserted that , when ...
... polygon , the in- terior of which may , by four lines , be divided into nine figures ; one being a square , four re- ciprocal rectangles , and the remaining four re- ciprocal triangles . the 411. Geometricians have asserted that , when ...
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Términos y frases comunes
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