Elements of Geometry: With Practical Applications, for the Use of SchoolsRichardson, Lord & Holbrook, 1829 - 129 páginas |
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Página vii
... angles inscribed in a semicircle are right angles , and was so delighted with the discovery that he made a sacrifice to the Muses . Soon after Thales camé Anaxagoras . He was im- prisoned on account of his opinions respecting astrono my ...
... angles inscribed in a semicircle are right angles , and was so delighted with the discovery that he made a sacrifice to the Muses . Soon after Thales camé Anaxagoras . He was im- prisoned on account of his opinions respecting astrono my ...
Página xiii
... angles of a triangle are equal to two right angles , when his father discovered what he was doing . This , be it remembered , was when he was only twelve years old . Passing over Huygens and Gregory , we pause a moment to admire the ...
... angles of a triangle are equal to two right angles , when his father discovered what he was doing . This , be it remembered , was when he was only twelve years old . Passing over Huygens and Gregory , we pause a moment to admire the ...
Página xiv
... right angles are equal . 12. If a straight line meets two straight lines so as to make the two interior angles on the same side of it taken together , less than two right angles , these straight lines being continually produced , shall ...
... right angles are equal . 12. If a straight line meets two straight lines so as to make the two interior angles on the same side of it taken together , less than two right angles , these straight lines being continually produced , shall ...
Página 16
... Right angles , acute angles , obtuse angles Properties of perpendiculars Parallel lines Tangents , secants 17 Inscribed angles 34 - 20 Triangles 36 21 Proportions 41 23 Proportional lines 43 24 Similar triangles 47 Mean Proportional 50 ...
... Right angles , acute angles , obtuse angles Properties of perpendiculars Parallel lines Tangents , secants 17 Inscribed angles 34 - 20 Triangles 36 21 Proportions 41 23 Proportional lines 43 24 Similar triangles 47 Mean Proportional 50 ...
Página 25
... Right angle is that which is made by one straight line meeting another , so as to make the two adjacent angles equal . An Acute angle is less than a Right angle . An Obtuse angle is greater than a Right angle . Thus when the moving line ...
... Right angle is that which is made by one straight line meeting another , so as to make the two adjacent angles equal . An Acute angle is less than a Right angle . An Obtuse angle is greater than a Right angle . Thus when the moving line ...
Otras ediciones - Ver todas
Elements of Geometry: With Practical Applications, for the Use of Schools Timothy Walker Sin vista previa disponible - 2023 |
Elements of Geometry: With Practical Applications, for the Use of Schools Timothy Walker Sin vista previa disponible - 2019 |
Términos y frases comunes
A B C D A B fig adjacent angles angles are equal axis B A C base and altitude base multiplied bisect called centre chord circ circumference coincide contain convex surface cube cylinder definition demonstrated diameter divided draw equally distant equivalent found by multiplying frustum geometry given line given square greater half the arc Hence homologous sides hypothenuse inches infinite number infinitely small inscribed angles inscribed circle line A B line drawn linear unit mean proportional number of sides parallel sides parallelopiped perim perpendicular polyedrons preceding proposition proved pyramid radii radius regular polygon right angles right parallelogram right triangle semicircumference similar triangles solid angles sphere square feet straight line suppose tangent THEOREM.-The solidity tion trapezoid triangle A B C triangles are equal triangular prism vertex vertices
Pasajes populares
Página ii - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Página 48 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. D c A' D' Hyp. In triangles ABC and A'B'C', ZA = ZA'. To prove AABC = ABxAC. A A'B'C' A'B'xA'C' Proof. Draw the altitudes BD and B'D'.
Página 63 - The square described on the hypotenuse of a right triangle is equivalent to the sum of the squares on the other two sides.
Página ii - ... and also to an Act, entitled, " An Act- supplementary to an Act, entitled, ' An Act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies, during the limes therein mentioned ;' and extending the benefits thereof to the arts of designing, engraving, and etching historical, and other prints.
Página xiv - If a straight line meets two straight lines, so as to " make the two interior angles on the same side of it taken " together less than two right angles...
Página xv - LET it be granted that a straight line may be drawn from any one point to any other point.
Página 41 - In any proportion, the product of the means is equal to the product of the extremes.
Página xiv - Things which are double of the same, are equal to one another. 7. Things which are halves of the same, are equal to one another.
Página 42 - Multiplying or dividing both the numerator and denominator of a fraction by the same number does not change the value of the fraction.
Página xiv - Things which are halves of the same are equal to one another. 8. Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another. 9. The whole is greater than its part. 10. Two straight lines cannot enclose a space. 11. All right angles are equal to one another.