Inventional Geometry: A Series of Problems, Intended to Familiarize the Pupil with Geometrical Conceptions, and to Exercise His Inventive FacultyD. Appleton, 1876 - 97 páginas |
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Página 26
... equilateral triangle into two parts that shall be equal to each other and similar to each other ? 1 Triangles are also called trilaterals . Equilateral triangles are also called trigons . 49. Can you draw one line perpendicular to ...
... equilateral triangle into two parts that shall be equal to each other and similar to each other ? 1 Triangles are also called trilaterals . Equilateral triangles are also called trigons . 49. Can you draw one line perpendicular to ...
Página 36
... equilateral triangle , and write in each angle the number of degrees it contains . 93. Can you place a circle in a semi - circle ? 94. Can you place a hexagon in a circle ? 95. Can you divide a circle into eight equal sectors ? A sector ...
... equilateral triangle , and write in each angle the number of degrees it contains . 93. Can you place a circle in a semi - circle ? 94. Can you place a hexagon in a circle ? 95. Can you divide a circle into eight equal sectors ? A sector ...
Página 37
... equilateral triangle which is equally distant from each side of the triangle , and equally distant from each of the angular • points of the triangle , is called the centre of the triangle . 101. Can you make an equilateral triangle ...
... equilateral triangle which is equally distant from each side of the triangle , and equally distant from each of the angular • points of the triangle , is called the centre of the triangle . 101. Can you make an equilateral triangle ...
Página 38
... equilateral triangle into three equal and similar parts ? 105. What is the greatest number of angles that can be made with four lines ? 106. Make a hexagon , and place a trigon on the outside of each of its boundaries , and say what the ...
... equilateral triangle into three equal and similar parts ? 105. What is the greatest number of angles that can be made with four lines ? 106. Make a hexagon , and place a trigon on the outside of each of its boundaries , and say what the ...
Página 40
... equilateral triangles may be placed around one equilateral triangle to touch it . 122. Divide a square into four equal and similar figures several ways , and give the name to each variety 123. Can you place two hexagons so that one side ...
... equilateral triangles may be placed around one equilateral triangle to touch it . 122. Divide a square into four equal and similar figures several ways , and give the name to each variety 123. Can you place two hexagons so that one side ...
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adjacent angles AMERICAN BOOK COMPANY angular points arc is called arithmetic mean arrange the surfaces axis base boundaries breadth card a hollow circumference construct cube curve determine diagonal scale diameter dimensions distance divide a circle divide a line divide an equilateral dodecagon duodecimals ellipse English equal and similar equal sectors equilateral triangle essays find the area four equal geometry Give a plan give a sketch Give an example gles hexahedron icosahedron isosceles triangle length line drawn line of chords line of sines line of tangents means nonagon number of degrees obtuse angle octagon octahedron pentagon piece of card place a circle place a hexagon place a square polygon protractor pupil pyramid quadrant quadrilaterals radii radius rectangle reëntrant angle rhomboid rhombus right angle right-angled triangle secant sides is called solid square inches square yard student takes the name tetrahedron trapezium versed sine Wellesley College write its name zoid
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Página 43 - TRIANGLES upon the same base, and between the same parallels, are equal to one another.
Página 13 - I keep the subject constantly before me, and wait till the first dawnings open slowly by little and little into a full and clear light.
Página 5 - INTRODUCTION. it is considered that by geometry the architect constructs our buildings, the civil engineer our railways; that by a higher kind of geometry, the surveyor makes a map of a county or of a kingdom; that a geometry still higher is the foundation of the noble science of...