Lessons on the delineation of form1848 |
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Página 27
... stand upon , or touch , the horizontal . The angle on each side of the perpendicular is a right angle . DEFINITIONS ... standing on another straight line makes the adjacent angles equal to each other , each of these angles is called a ...
... stand upon , or touch , the horizontal . The angle on each side of the perpendicular is a right angle . DEFINITIONS ... standing on another straight line makes the adjacent angles equal to each other , each of these angles is called a ...
Página 28
... 2. Draw a perpendicular standing upon the middle of the horizontal . 3. From a point which shall lie somewhere be- tween the top of the perpendicular , and the left extre- mity of the horizontal , draw a line to touch 28.
... 2. Draw a perpendicular standing upon the middle of the horizontal . 3. From a point which shall lie somewhere be- tween the top of the perpendicular , and the left extre- mity of the horizontal , draw a line to touch 28.
Página 35
... stands . 2. Rub out any portion of the lower part of the perpendicular . 3. Join the extremity of the remaining perpendic- ular , to the opposite extremities of the horizontal line . Three internal triangles will then be formed , and ...
... stands . 2. Rub out any portion of the lower part of the perpendicular . 3. Join the extremity of the remaining perpendic- ular , to the opposite extremities of the horizontal line . Three internal triangles will then be formed , and ...
Página 36
... stand , is called its base . 2. Such right line is not always a horizontal line . 3. One of the sides of a triangle may sometimes be used as a base . EXERCISE . - Example V , in various sizes . QUESTIONS Should be asked by the teacher ...
... stand , is called its base . 2. Such right line is not always a horizontal line . 3. One of the sides of a triangle may sometimes be used as a base . EXERCISE . - Example V , in various sizes . QUESTIONS Should be asked by the teacher ...
Página 64
... is represented . EXPLANATION . - 1 . The perpendicular standing upon the middle of the base divides the isoceles triangle into two right angled triangles , which are in every respect equal . The teacher can shew this by 64.
... is represented . EXPLANATION . - 1 . The perpendicular standing upon the middle of the base divides the isoceles triangle into two right angled triangles , which are in every respect equal . The teacher can shew this by 64.
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.