Lessons on Form: Or, An Introduction to Geometry, as Given in a Pestalozzian School, Cheam, SurreyTaylor and Walton, 1837 - 215 sider |
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Side vi
... edge : therefore , as many times as there are two sides in these twenty - four sides , so many edges that body must have , —that is , twelve edges . This result being obtained , the object is presented to him for examination , and he ...
... edge : therefore , as many times as there are two sides in these twenty - four sides , so many edges that body must have , —that is , twelve edges . This result being obtained , the object is presented to him for examination , and he ...
Side 9
... edges meeting in one point . M. - How many edges or angles of different faces are at least required to form a corner or solid angle ? Try , one - two - three . P. - Three at least . M. — Instead of " corners , " say solid angles ; how ...
... edges meeting in one point . M. - How many edges or angles of different faces are at least required to form a corner or solid angle ? Try , one - two - three . P. - Three at least . M. — Instead of " corners , " say solid angles ; how ...
Side 10
... edge . 2. Three or more edges meeting in one point form a solid angle . 3. The tetrahedron is a solid bounded by four tri- angular faces : it has six edges , and four solid angles . LESSON IV . M. - Compare the sides of the 10 LESSONS ...
... edge . 2. Three or more edges meeting in one point form a solid angle . 3. The tetrahedron is a solid bounded by four tri- angular faces : it has six edges , and four solid angles . LESSON IV . M. - Compare the sides of the 10 LESSONS ...
Side 12
... edges the octahedron has , without actually looking at the solid ? P. - It must have twelve edges ; because , since it is bounded by eight triangles , there are twenty - four sides to them , two of which belong to each edge ; con ...
... edges the octahedron has , without actually looking at the solid ? P. - It must have twelve edges ; because , since it is bounded by eight triangles , there are twenty - four sides to them , two of which belong to each edge ; con ...
Side 13
... edges and solid angles can be ascertained there- from . LESSON V. M. - Is there another among these solids which is bounded by triangles ? What is their number ? It is therefore called icosahedron ( from the Greek ikoσi , twenty , and ...
... edges and solid angles can be ascertained there- from . LESSON V. M. - Is there another among these solids which is bounded by triangles ? What is their number ? It is therefore called icosahedron ( from the Greek ikoσi , twenty , and ...
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Lessons on Form: Or, An Introduction to Geometry, as Given in a Pestalozzian ... Charles Reiner Uten tilgangsbegrensning - 1837 |
Lessons on Form: Or, An Introduction to Geometry, as Given in a Pestalozzian ... Charles Reiner Uten tilgangsbegrensning - 1837 |
Vanlige uttrykk og setninger
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
Populære avsnitt
Side 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.
Side 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...
Side 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.
Side 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.