## Lessons on the delineation of form1848 |

### Common terms and phrases

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

### Popular passages

Page 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.

Page 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.

Page 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.

Page 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.

Page 47 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.

Page 33 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.

Page 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.

Page 68 - A sphere is a solid figure described by the revolution of a semicircle about its diameter, which remains unmoved.

Page 67 - The axis of a cone is the fixed straight line about which the triangle revolves.

Page 45 - A segment of a circle is the figure contained by a straight line and the circumference which it cuts off.