Essentials of GeometryS.C. Griggs, 1883 - 267 σελίδες |
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Σελίδα x
... meet as an instructor . As nearly as possible I have written as I have found myself obliged to teach , and thus hope to have furnished a thoroughly intelligible com- panion text . Tastes and habits are determined in the privacy of ...
... meet as an instructor . As nearly as possible I have written as I have found myself obliged to teach , and thus hope to have furnished a thoroughly intelligible com- panion text . Tastes and habits are determined in the privacy of ...
Σελίδα 3
... meet , or would if sufficiently pro- longed Thus the opening between the lines A B and A C , at the point A , is an angle . A B C 2. The lines which form the angle are called Sides ; the point at which the sides meet is called the ...
... meet , or would if sufficiently pro- longed Thus the opening between the lines A B and A C , at the point A , is an angle . A B C 2. The lines which form the angle are called Sides ; the point at which the sides meet is called the ...
Σελίδα 4
... meets another straight line so as to make the adjacent angles equal , each of these angles is a Right Angle , and the first line is said to be perpendicular to the A- D second . Thus , if the two adjacent angles A CD and BCD , formed by ...
... meets another straight line so as to make the adjacent angles equal , each of these angles is a Right Angle , and the first line is said to be perpendicular to the A- D second . Thus , if the two adjacent angles A CD and BCD , formed by ...
Σελίδα 5
Alfred Hix Welsh. 9. If one line meets another so as to make the adjacent angles unequal , each of these angles is called Oblique , in distinction from the right angle ; as , A CD and D C B. Oblique angles are of two classes : A acute ...
Alfred Hix Welsh. 9. If one line meets another so as to make the adjacent angles unequal , each of these angles is called Oblique , in distinction from the right angle ; as , A CD and D C B. Oblique angles are of two classes : A acute ...
Σελίδα 8
... meet another straight line , the sum of the adjacent angles will be equal to two right angles . A E D B Let the line CD meet the line A B at the point C ; then will A CD + BCD two right angles . = For , let CE be drawn perpen- dicular ...
... meet another straight line , the sum of the adjacent angles will be equal to two right angles . A E D B Let the line CD meet the line A B at the point C ; then will A CD + BCD two right angles . = For , let CE be drawn perpen- dicular ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
A B and C D ABCD adjacent angles angle equal apothem bisect central angles centre circle whose radius circumference coincide construct convex surface cylinder diagonals diameter distance divided draw drawn equal altitudes equal bases equal circles equally distant equiangular EXERCISES feet frustum generatrix given angle given circle given line given point greater Hence homologous sides hypotenuse included angle inscribed angle inscribed circle interior angles intersect isosceles triangle lune number of sides oblique parallel parallelogram parallelopiped perimeter perpendicular plane prism Prob proportional pyramid Q. E. D. Cor Q. E. F quadrilateral QUERIES radii ratio rectangle regular polygon right cone right triangle Scholium secant segments similar slant height sphere spherical triangle square straight line tangent triangle A B C vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 18 - if two triangles have two sides of the one equal to two sides of the...
Σελίδα 110 - In any triangle the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides diminished by twice the product of one of those sides and the projection of the other upon it.
Σελίδα 13 - If two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the two triangles will be equal.
Σελίδα 107 - If two triangles have two sides and the included angle of the one equal to two sides and the included angle of the other, each to each, they are equal in all their parts.
Σελίδα 24 - 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.
Σελίδα 38 - If two sides of a quadrilateral are equal and parallel, the figure is a parallelogram.
Σελίδα 42 - If the product of two quantities is equal to the product of two others, two of them may be made the means, and the other two the extremes of a proportion. Let bc=ad.
Σελίδα 232 - In any spherical triangle, the greater side is opposite the greater angle ; and conversely, the greater angle is opposite the greater side.
Σελίδα 14 - In an isosceles triangle the angles opposite the equal sides are equal.
Σελίδα x - AXIOM is a self-evident truth ; such as, — 1. Things which are equal to the same thing, are equal to each other. 2. If equals be added to equals, the sums will be equal. 3. If equals be taken from equals, the remainders will be equal. 4. If equals be added to unequals, the sums will be unequal.