Lessons on Form: Or, An Introduction to Geometry, as Given in a Pestalozzian School, Cheam, SurreyTaylor and Walton, 1837 - 215 páginas |
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Página 2
... M. - Objects considered with reference to these three dimensions only are called solids . What other property have all solids in common ? P. - They are all bounded by a surface . M. ( holding up a sphere and a prism . ) — In what does ...
... M. - Objects considered with reference to these three dimensions only are called solids . What other property have all solids in common ? P. - They are all bounded by a surface . M. ( holding up a sphere and a prism . ) — In what does ...
Página 6
... M. - Which face have you placed next in succession to the triangle ? P. - One which is bounded by four sides . M. - Imitate it on your slates . Which of the faces come next ? P. - The five - sided face ; then the six , seven , and eight ...
... M. - Which face have you placed next in succession to the triangle ? P. - One which is bounded by four sides . M. - Imitate it on your slates . Which of the faces come next ? P. - The five - sided face ; then the six , seven , and eight ...
Página 7
... M. - You have mentioned another word instead of three - sided figure . P. - Yes , a triangle . M. From what circumstance do you think it is called thus ? P. From its having three angles . M. - The names of these several faces are ...
... M. - You have mentioned another word instead of three - sided figure . P. - Yes , a triangle . M. From what circumstance do you think it is called thus ? P. From its having three angles . M. - The names of these several faces are ...
Página 8
... quadrilateral has four angles ; a pentagon has five , a hexagon six , a heptagon seven , an octagon eight ; a polygon has as many angles as it has sides . LESSON III . M. What other parts do you discover 8 LESSONS ON FORM , BEING.
... quadrilateral has four angles ; a pentagon has five , a hexagon six , a heptagon seven , an octagon eight ; a polygon has as many angles as it has sides . LESSON III . M. What other parts do you discover 8 LESSONS ON FORM , BEING.
Página 9
... M. What other parts do you discover on these solids ? P. - Corners and edges . M. - How are the corners formed ? P. - By several angles of different planes meeting in one point ; or by several edges meeting in one point . M. - How many ...
... M. What other parts do you discover on these solids ? P. - Corners and edges . M. - How are the corners formed ? P. - By several angles of different planes meeting in one point ; or by several edges meeting in one point . M. - How many ...
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Términos y frases comunes
a b and c d a c b a c d acute angles adjacent angle alternate angles angle a b c angle contained angles are equal angles equal base called centre chords circumference cut the circle demonstration diameter dodecahedron edges equal angles equal sides equilateral exterior angle greater inscribed interior and opposite isosceles triangle LESSON likewise lines a b lines be drawn M.-Compare M.-Demonstrate M.-Draw M.-Express M.-Hence M.-What M.-When obtuse angle octahedron opposite angles P.-Because P.-The angle parallelogram pentagon perpendicular plane angles plane faces point of contact pupils pyramid quadrilateral figure rectangle contained rhomb right angles semi-circumference similar triangles slates solid angles sphere square straight line joining tangent third side three angles trapezium triangle a b c triangles are equal truth twice the rectangle unequal whole line
Pasajes populares
Página 98 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Página 134 - In obtuse-angled triangles, if a perpendicular be drawn from either of the acute angles to the opposite side produced, the square on the side subtending the obtuse angle, is greater than the squares on the sides containing the obtuse angle, by twice the rectangle contained by the side...
Página 137 - In every triangle, the square of the side subtending either of the acute angles is less than the squares of the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the perpendicular let fall upon it from the opposite angle, and the acute angle.
Página 219 - A very convenient class-book for junior students in' private schools. It is intended to convey, in clear and precise terms, general notions of all the principal divisions of Physical Science.