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 105
... diagonal . What may be said of it ? P. - A diagonal divides a parallelogram into two equal parts . M. - Demonstrate this . a b d abcd , and a c bd , and cab Lcdb ; : . △ cab = △ cdb , and .. the diagonal cb divides the parallelogram ...
... diagonal . What may be said of it ? P. - A diagonal divides a parallelogram into two equal parts . M. - Demonstrate this . a b d abcd , and a c bd , and cab Lcdb ; : . △ cab = △ cdb , and .. the diagonal cb divides the parallelogram ...
Side 106
... diagonal bisects the parallelogram . 3. The two diagonals bisect each other . M. — Now , find what particular truths apply to the Square . P. - 1 . In a square , each diagonal bisects the opposite angles . b d Thus , abac , alternate ...
... diagonal bisects the parallelogram . 3. The two diagonals bisect each other . M. — Now , find what particular truths apply to the Square . P. - 1 . In a square , each diagonal bisects the opposite angles . b d Thus , abac , alternate ...
Side 107
... the particular truths which apply to a rhomb . P. - 1 . Each diagonal bisects the opposite angles . 2. The two diagonals bisect each other at right angles . 3. The two diagonals are not equal to each other AN INTRODUCTION TO GEOMETRY . 107.
... the particular truths which apply to a rhomb . P. - 1 . Each diagonal bisects the opposite angles . 2. The two diagonals bisect each other at right angles . 3. The two diagonals are not equal to each other AN INTRODUCTION TO GEOMETRY . 107.
Side 112
... diagonal bisects the pa- rallelogram . 6. In a parallelogram , two diagonals bisect each other . 7. In a square , a diagonal bisects the opposite angles . 8. In a square , two diagonals are equal to each other ; they intersect each ...
... diagonal bisects the pa- rallelogram . 6. In a parallelogram , two diagonals bisect each other . 7. In a square , a diagonal bisects the opposite angles . 8. In a square , two diagonals are equal to each other ; they intersect each ...
Side 120
... diagonal of these figures , make - up or complete them , and are , on that account , called Complements . What may be said of them ? P. - The complements of the parallelograms which are about the diagonal of any parallelogram are equal ...
... diagonal of these figures , make - up or complete them , and are , on that account , called Complements . What may be said of them ? P. - The complements of the parallelograms which are about the diagonal of any parallelogram are equal ...
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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.