Lessons on Form: Or, An Introduction to Geometry, as Given in a Pestalozzian School, Cheam, SurreyTaylor and Walton, 1837 - 215 Seiten |
Im Buch
Ergebnisse 1-5 von 13
Seite 7
... Greek TÉVTE , five , and ywvía , angle ) ; a six - sided face , a hexagon , ( from the Greek E , six , and yovía , angle ) ; a seven- sided face , a heptagon ( from the Greek Trа , seven , and ywvía , angle ) ; an eight - sided AN ...
... Greek TÉVTE , five , and ywvía , angle ) ; a six - sided face , a hexagon , ( from the Greek E , six , and yovía , angle ) ; a seven- sided face , a heptagon ( from the Greek Trа , seven , and ywvía , angle ) ; an eight - sided AN ...
Seite 8
... Greek oкTw , eight , and ywvía , angle ) . And if this mode of expression be extended to faces which are bounded by many sides , they are called polygons , ( from the Greek woλus many , and ywvía , angle ) . As before , the pupils are ...
... Greek oкTw , eight , and ywvía , angle ) . And if this mode of expression be extended to faces which are bounded by many sides , they are called polygons , ( from the Greek woλus many , and ywvía , angle ) . As before , the pupils are ...
Seite 9
... Greek Terpa , four , and dpa , seats ) . M. - What are the four faces ? P. - Four triangles . M. - How many sides have four triangles ? P. - Twelve . M. - How many of these sides are there to each of the edges ? P. - Two sides ...
... Greek Terpa , four , and dpa , seats ) . M. - What are the four faces ? P. - Four triangles . M. - How many sides have four triangles ? P. - Twelve . M. - How many of these sides are there to each of the edges ? P. - Two sides ...
Seite 11
... Greek ioos , equal , and σkéλos , a leg ) ; and the unequal side is called its base . And a triangle having none of its sides equal to each other is called a scalene ( from the Greek okaw , to limp , and σkaλnvos , unequal ) triangle ...
... Greek ioos , equal , and σkéλos , a leg ) ; and the unequal side is called its base . And a triangle having none of its sides equal to each other is called a scalene ( from the Greek okaw , to limp , and σkaλnvos , unequal ) triangle ...
Seite 12
... Greek OxT , eight , and dpa , a seat ) . Can you find out how many 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 ...
... Greek OxT , eight , and dpa , a seat ) . Can you find out how many 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 ...
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
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
Beliebte Passagen
Seite 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.
Seite 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...
Seite 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.
Seite 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.