Lessons on the delineation of form1848 |
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Página 18
... lengths . ( The children at the teacher's desk , as before . ) To draw HORIZONTAL parallel lines of various lengths . EXAMPLE I. DEFINITION.- " Parallel straight lines are such as ( are in the same plane , and which * ) being produced ...
... lengths . ( The children at the teacher's desk , as before . ) To draw HORIZONTAL parallel lines of various lengths . EXAMPLE I. DEFINITION.- " Parallel straight lines are such as ( are in the same plane , and which * ) being produced ...
Página 19
... length . 2. About half an inch below this line , draw another of equal length , and keep it parallel to the first . 3. In the same direction , continue this line , adding a piece of the same length as the first . ¶ In the middle of this ...
... length . 2. About half an inch below this line , draw another of equal length , and keep it parallel to the first . 3. In the same direction , continue this line , adding a piece of the same length as the first . ¶ In the middle of this ...
Página 20
... lengths , as in the last exercise ; but in the present instance let the lines be drawn in a downward direc- tion ... lengths of such lines . To draw OBLIQUE parallel lines . EXAMPLE III . EXPLANATION 20 To draw VERTICAL parallel lines of ...
... lengths , as in the last exercise ; but in the present instance let the lines be drawn in a downward direc- tion ... lengths of such lines . To draw OBLIQUE parallel lines . EXAMPLE III . EXPLANATION 20 To draw VERTICAL parallel lines of ...
Página 24
... length , should be made without taking the pencil off the paper and changing the point on which the hand rests . In drawing every line the greatest ac- curacy should be insisted on . 5. The mode of correcting faults , where the teach ...
... length , should be made without taking the pencil off the paper and changing the point on which the hand rests . In drawing every line the greatest ac- curacy should be insisted on . 5. The mode of correcting faults , where the teach ...
Página 25
... length ; thus , To vary this exercise the same lines may be lengthened at both ends : -shewing that " a straight line can be produced to any length from either ex- tremity . " C A suitable illustration of the preceding exercise will be ...
... length ; thus , To vary this exercise the same lines may be lengthened at both ends : -shewing that " a straight line can be produced to any length from either ex- tremity . " C A suitable illustration of the preceding exercise will be ...
Términos y frases comunes
Author's Diagrams base called CHAPTER circular curves collective teaching cone be cut cylinder DEFINITION DEFINITION.-1 delineation of form desk diagonal diameter dicular downstroke draw a circle Draw a horizontal draw a line Draw a perpendicular Draw a straight draw STRAIGHT LINES draw the lines drawing the curves elementary writing ellipse EXAMPLE V.-To draw EXERCISE.-Repetition at discretion EXERCISES.-1 EXPLANATION.-1 figure contained figure in various horizontal line hyperbola II.-To draw illustrated Infant Schools instruction INSTRUCTION.-1 introduced isoceles triangle join the dots Join the extremities learning to write left side length Lessons for Infant line drawn line of beauty lines slant lower mark the dots Model Lessons oblong opposite sides outline drawing OUTLINE WRITING BOOKS parabola parallel lines parallelogram parallelopiped pencil perpen plane PLATE preceding Exercises prism pyramid QUESTIONS right angled triangle right line sides equal slanting line slate or paper solid figure teacher tion trapeziums Triangular prisms upstroke various sizes
Pasajes populares
Página 47 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Página 65 - 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.
Página 27 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Página 27 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Página 47 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 33 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Página 39 - A parallelogram is a four.sided figure, of which the opposite sides are parallel; and the diameter is the straight line joining two of its opposite angles.
Página 68 - A sphere is a solid figure described by the revolution of a semicircle about its diameter, which remains unmoved.
Página 67 - The axis of a cone is the fixed straight line about which the triangle revolves.
Página 45 - A segment of a circle is the figure contained by a straight line and the circumference which it cuts off.