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 36
... intersect each other . The place where they intersect is called the point of intersection . Draw two lines which shall intersect each other . P. - a b and c d intersect each other , at the point e , which is , therefore , their point of ...
... intersect each other . The place where they intersect is called the point of intersection . Draw two lines which shall intersect each other . P. - a b and c d intersect each other , at the point e , which is , therefore , their point of ...
Side 42
... intersecting each other ? P. - Four . M. - What may be said of them ? P. They are either four right angles , or they are , together , equal to four right angles . M. - If one of them is a right angle , what must each of the others be ...
... intersecting each other ? P. - Four . M. - What may be said of them ? P. They are either four right angles , or they are , together , equal to four right angles . M. - If one of them is a right angle , what must each of the others be ...
Side 43
... intersecting each other . ) — Name two of these angles which , together , are equal to two right angles . d P. - The angles a m c and c m b . M. ( writing . ) samc and c m b = 2 rt . ≤ s . Name two other angles which are also equal to ...
... intersecting each other . ) — Name two of these angles which , together , are equal to two right angles . d P. - The angles a m c and c m b . M. ( writing . ) samc and c m b = 2 rt . ≤ s . Name two other angles which are also equal to ...
Side 44
... intersect each other , the opposite or vertical angles are equal , " what would you do ? P. We would do as we have just now done . M. - Well - the method by which a mathematical truth , such as this , is proved , we call its ...
... intersect each other , the opposite or vertical angles are equal , " what would you do ? P. We would do as we have just now done . M. - Well - the method by which a mathematical truth , such as this , is proved , we call its ...
Side 45
... intersect each other in the point m ; the vertical angles a m ca and b m d , and , also , cm b and am d , shall be equal . a m Because sa mc and c m b = 2rt . △ s , b and , also , thes cm b and b m d = 2 rt . ≤s ; therefore , sam c ...
... intersect each other in the point m ; the vertical angles a m ca and b m d , and , also , cm b and am d , shall be equal . a m Because sa mc and c m b = 2rt . △ s , b and , also , thes cm b and b m d = 2 rt . ≤s ; therefore , sam c ...
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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.