A graduated course of problems in practical plane and solid geometry |
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Página 4
... radius ( plural radiï ) is a straight line drawn from the centre to the circumference . Ex . AB- B 17. A diameter is a straight line drawn through the centre , and terminated at both extremities by the circumference . Ex . AB— B B 18. A ...
... radius ( plural radiï ) is a straight line drawn from the centre to the circumference . Ex . AB- B 17. A diameter is a straight line drawn through the centre , and terminated at both extremities by the circumference . Ex . AB— B B 18. A ...
Página 6
... radius greater than half the line AB , describe the arc DE . 2. From point B as centre , with the same radius , describe the arc FG , intersecting the arc DE in H and K. 3. Draw the straight line HK , and the given straight line AB will ...
... radius greater than half the line AB , describe the arc DE . 2. From point B as centre , with the same radius , describe the arc FG , intersecting the arc DE in H and K. 3. Draw the straight line HK , and the given straight line AB will ...
Página 7
... radius , describe arc FG ; and from E as centre , with the same radius , inter- sect the arc FG in the point H. 3 , Draw the straight line HC , and it will be perpendicular the given straight line AB . D C E NOTE 1. - Because HC is ...
... radius , describe arc FG ; and from E as centre , with the same radius , inter- sect the arc FG in the point H. 3 , Draw the straight line HC , and it will be perpendicular the given straight line AB . D C E NOTE 1. - Because HC is ...
Página 8
... radius , cut the arc in D ; from D , with the same radius , describe an arc EF , cutting CDE in E ; and from E , with the same radius , cut the arc EF in F. 3. Draw the line FB , and it will be perpendicular to , or at right angles to ...
... radius , cut the arc in D ; from D , with the same radius , describe an arc EF , cutting CDE in E ; and from E , with the same radius , cut the arc EF in F. 3. Draw the line FB , and it will be perpendicular to , or at right angles to ...
Página 9
... radius BC , describe arc CD . 2. From point A as centre , with radius AC , describe arc CE . A. E 3. Draw the line CE , and it will be perpendicular to the given straight line AB . Another Method . 1. Take any point D in the given line ...
... radius BC , describe arc CD . 2. From point A as centre , with radius AC , describe arc CE . A. E 3. Draw the line CE , and it will be perpendicular to the given straight line AB . Another Method . 1. Take any point D in the given line ...
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.