Elements of Geometry and Conic SectionsHarper & brothers, 1861 - 234 sider |
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Resultat 1-5 av 47
Side 44
... described about the polygon . 8. A secant is a line which cuts the cir- cumference , and lies partly within and partly without the circle . 9. A straight line is said to touch a circle , when it meets the circumference , and , being ...
... described about the polygon . 8. A secant is a line which cuts the cir- cumference , and lies partly within and partly without the circle . 9. A straight line is said to touch a circle , when it meets the circumference , and , being ...
Side 45
... described about a circle , when each side of the polygon touches the cir- cumference of the circle . In the same case , the circle is said to be in- scribed in the polygon . O PROPOSITION I. THEOREM . Every diameter divides the circle ...
... described about a circle , when each side of the polygon touches the cir- cumference of the circle . In the same case , the circle is said to be in- scribed in the polygon . O PROPOSITION I. THEOREM . Every diameter divides the circle ...
Side 49
... described from the center F with the radius FA will pass through the three given points A , B , C. A Secondly . No other circumference can pass through the same points . For , if there were a second , its center could not be out of the ...
... described from the center F with the radius FA will pass through the three given points A , B , C. A Secondly . No other circumference can pass through the same points . For , if there were a second , its center could not be out of the ...
Side 55
... described with equal radii . Cor . 2. In equal circles , sectors are to each other as their arcs ; for sectors are equal when their angles are equal . PROPOSITION XV . THEOREM . An inscribed angle is measured by half the arc included be ...
... described with equal radii . Cor . 2. In equal circles , sectors are to each other as their arcs ; for sectors are equal when their angles are equal . PROPOSITION XV . THEOREM . An inscribed angle is measured by half the arc included be ...
Side 63
... described on BC . If these two parts are taken from the entire square , there will remain the two rect- angles BCIG ... described on the difference of two lines , is equiv alent to the sum of the squares of the lines , diminished by ...
... described on BC . If these two parts are taken from the entire square , there will remain the two rect- angles BCIG ... described on the difference of two lines , is equiv alent to the sum of the squares of the lines , diminished by ...
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Vanlige uttrykk og setninger
ABCD AC is equal allel altitude angle ABC angle ACB angle BAC base BCDEF bisected CA² chord circle circumference cone contained convex surface curve described diagonals diameter draw ellipse equal angles equal to AC equally distant equiangular equilateral equivalent exterior angle foci four right angles frustum given point given straight line greater hyperbola hypothenuse inscribed intersect join latus rectum Let ABC lines AC major axis mean proportional measured by half meet number of sides ordinate parabola parallelogram parallelopiped pendicular perimeter perpen perpendicular plane MN principal vertex prism PROPOSITION pyramid quadrant radii radius ratio rectangle regular polygon right angles Prop right-angled triangle Scholium segment side AC similar similar triangles solid angle sphere spherical triangle square subtangent tangent THEOREM triangle ABC vertex vertices
Populære avsnitt
Side 27 - 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 157 - The sum of the angles of a spherical triangle is greater than two and less than six right angles ; that is, greater than 180° and less than 540°. (gr). If A'B'C' is the polar triangle of ABC...
Side 60 - Any two rectangles are to each other as the products of their bases by their altitudes.
Side 63 - IF a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the' rectangle contained by the parts.
Side 101 - When you have proved that the three angles of every triangle are equal to two right angles...
Side 10 - CHG; and they are adjacent angles; but when a straight line standing on another straight line makes the adjacent angles equal to one another, each of them is a right angle; and the straight line which stands upon the other is called a perpendicular to it; therefore from the given point C a perpendicular CH has been drawn to the given straight line AB.
Side 32 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 22 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Side 18 - BC common to the two triangles, which is adjacent to their equal angles ; therefore their other sides shall be equal, each to each, and the third angle of the one to the third angle of the other, (26.
Side 41 - It follows that either couplet of a proportion may be multiplied or divided by any quantity, and the resulting quantities will be in proportion. And since by...