Essentials of GeometryS.C. Griggs, 1883 - 267 sider |
Inni boken
Resultat 1-5 av 66
Side 4
... angles , however , may be formed at a given point , and so have a common vertex ; in which case a particular angle ... Right Angle , and the first line is said to be perpendicular to the A- D second . Thus , if the two adjacent angles A ...
... angles , however , may be formed at a given point , and so have a common vertex ; in which case a particular angle ... Right Angle , and the first line is said to be perpendicular to the A- D second . Thus , if the two adjacent angles A ...
Side 5
... 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 and obtuse . 10. An Acute Angle is one which is less than a right angle , as ...
... 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 and obtuse . 10. An Acute Angle is one which is less than a right angle , as ...
Side 6
... true in order to argue from it the truth or falsity of a proposition ; and it is made either in the statement of the ... right angles are equal . 7. Only one straight line can be drawn from one point to another . 8. A straight line is ...
... true in order to argue from it the truth or falsity of a proposition ; and it is made either in the statement of the ... right angles are equal . 7. Only one straight line can be drawn from one point to another . 8. A straight line is ...
Side 8
... 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 to A B at C ( Post . 6 ) , and let R denote a right angle ...
... 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 to A B at C ( Post . 6 ) , and let R denote a right angle ...
Side 9
... right angle , what is its complement ? 2. If an angle is a right angle , what is its supplement ? C - 90 degrees ... angles are formed about the point of intersection , which are distin- guished as follows : 1. Those which lie on the same ...
... right angle , what is its complement ? 2. If an angle is a right angle , what is its supplement ? C - 90 degrees ... angles are formed about the point of intersection , which are distin- guished as follows : 1. Those which lie on the same ...
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Vanlige uttrykk og setninger
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
Populære avsnitt
Side 18 - if two triangles have two sides of the one equal to two sides of the...
Side 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.
Side 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.
Side 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.
Side 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.
Side 38 - If two sides of a quadrilateral are equal and parallel, the figure is a parallelogram.
Side 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.
Side 232 - In any spherical triangle, the greater side is opposite the greater angle ; and conversely, the greater angle is opposite the greater side.
Side 14 - In an isosceles triangle the angles opposite the equal sides are equal.
Side 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.