A graduated course of problems in practical plane and solid geometry |
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Página iv
... base - line is always represented by the letters xy , and the style of lettering uniformly indicates whether a point , line , & c . , is in space , in the vertical plane , or in the horizontal . In order to make the geometrical terms ...
... base - line is always represented by the letters xy , and the style of lettering uniformly indicates whether a point , line , & c . , is in space , in the vertical plane , or in the horizontal . In order to make the geometrical terms ...
Página viii
... base line of the drawing . NOTE 2. In the figure , GH represents a drawing - board . 5. The Set - Square . This is a triangular piece of wood ABC , having the edge BC at right angles to AB . Ît forms a cheap and convenient instrument ...
... base line of the drawing . NOTE 2. In the figure , GH represents a drawing - board . 5. The Set - Square . This is a triangular piece of wood ABC , having the edge BC at right angles to AB . Ît forms a cheap and convenient instrument ...
Página 21
... the right angle ( AC ) is called the hypotenuse . The other sides are called the base , and perpendicular , irrespective of the position of the figure . 8. An obtuse - angled triangle is that which has PRACTICAL GEOMETRY . 21.
... the right angle ( AC ) is called the hypotenuse . The other sides are called the base , and perpendicular , irrespective of the position of the figure . 8. An obtuse - angled triangle is that which has PRACTICAL GEOMETRY . 21.
Página 22
... base of a triangle is generally its lowest side . Ex . AB— A B NOTE . Both in an isosceles triangle and in a right - angled triangle , the position of the base is changed . A B 12. The altitude of a triangle is its perpendicular height ...
... base of a triangle is generally its lowest side . Ex . AB— A B NOTE . Both in an isosceles triangle and in a right - angled triangle , the position of the base is changed . A B 12. The altitude of a triangle is its perpendicular height ...
Página 23
... base , or to the base produced . Ex . AB- A B B 13. The perimeter of a figure is its whole boundary . Thus , if one side of an equilateral triangle be 5 , its perimeter is 15 . 14. A chord is any straight line drawn across a circle ...
... base , or to the base produced . Ex . AB- A B B 13. The perimeter of a figure is its whole boundary . Thus , if one side of an equilateral triangle be 5 , its perimeter is 15 . 14. A chord is any straight line drawn across a circle ...
Términos y frases comunes
altitude angles to xy Atlas axis base BC Pr Bisect the angle bound in cloth circumference cone construct a triangle cube curve cylinder decagon describe a circle describe an arc describe the arc diameter BC distance divide draw a line draw a tangent draw lines edge ellipse equal circles equal in area equilateral triangle given circle given line given point given square ABCD given straight line given triangle ABC heptagon horizontal plane hyperbola inclined inscribe intersection isosceles triangle Join line BC line CD line of bisection lines parallel Maps mean proportional meeting number of equal octahedron parallel to xy parallelogram pentagon perpendicular to xy Philips plan and elevation PLANE GEOMETRY plane of projection point F points of division prism Problem projectors pyramid radii radius rectangle rectilineal figure regular polygon represent required circle rhombus right angles semicircle SOLID GEOMETRY square pyramid trapezium vertical plane
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Página 193 - A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed. If the fixed side be equal to the other side containing the right angle, the cone is called a right-angled cone ; if it be less than the other side, an obtuse-angled ; and if greater, an acute-angled cone. XIX. The axis of a cone is the fixed straight line about which the triangle revolves.
Página 123 - A straight line is said to be cut in extreme and mean ratio, when the whole is to the greater segment as the greater segment is to the less.