Plane Geometry: A Complete Course in the Elements of the ScienceChristopher Sower Company, 1901 - 266 sider |
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Side 9
... One of the disciples of Thales composed an elementary treatise on Geometry - the earliest on record - and he is said ... half the circumference of one circle and one - fourth the circumference of another is equal to an isosceles right ...
... One of the disciples of Thales composed an elementary treatise on Geometry - the earliest on record - and he is said ... half the circumference of one circle and one - fourth the circumference of another is equal to an isosceles right ...
Side 29
... one another . 11. Things which are half the same thing , or of equal things , are equal to one another . 12. Like powers of equal quantities are equal , and like roots of equal quantities are equal . NOTE . A truth readily derived from ...
... one another . 11. Things which are half the same thing , or of equal things , are equal to one another . 12. Like powers of equal quantities are equal , and like roots of equal quantities are equal . NOTE . A truth readily derived from ...
Side 33
... one another . Th . I. And a right angle is half of a straight angle . Def . 35 . Hence all right angles are equal to one another . Ax . 11 . NOTE . - Pupils may close a demonstration by repeating the theorem after the word " therefore ...
... one another . Th . I. And a right angle is half of a straight angle . Def . 35 . Hence all right angles are equal to one another . Ax . 11 . NOTE . - Pupils may close a demonstration by repeating the theorem after the word " therefore ...
Side 38
... one perpendicular can be drawn to that line . Given . Let Pbe the given point , and PE a perpendicular to AB . To ... half of PP ' , is less than PC , half of PCP ' . SCHOLIUM . Since a perpendicular is the shortest dis- tance 38 PLANE ...
... one perpendicular can be drawn to that line . Given . Let Pbe the given point , and PE a perpendicular to AB . To ... half of PP ' , is less than PC , half of PCP ' . SCHOLIUM . Since a perpendicular is the shortest dis- tance 38 PLANE ...
Side 66
... one - half of a parallelogram having the same base and the same altitude . COR . 3. - Two parallels included between two other parallels are equal . PROPOSITION XXX . - THEOREM . If the opposite sides of a quadrilateral are respec ...
... one - half of a parallelogram having the same base and the same altitude . COR . 3. - Two parallels included between two other parallels are equal . PROPOSITION XXX . - THEOREM . If the opposite sides of a quadrilateral are respec ...
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Plane Geometry: A Complete Course in the Elements of the Science Edward Brooks Uten tilgangsbegrensning - 1901 |
Plane Geometry: A Complete Course in the Elements of the Science Edward Brooks, Jr. Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
AB² ABC and DEF ABCD AC² acute angle adjacent angles altitude angle equal angles ACD angles are equal apothem base BC² bisector centre chord circumference circumscribed circle construct a square decagon denote diagonals diameter distance divided draw equal angles equally distant equiangular equiangular polygon equilateral triangle exterior angle figure geometry given angle given circle given line given point greater Hence homologous hypotenuse inches inscribed circle inscribed regular intersect isosceles triangle Let ABC line joining mean proportional measured by one-half middle points number of sides obtuse parallel parallelogram perimeter perpendicular Proof PROPOSITION prove quadrilateral quantities radii radius ratio rectangle regular hexagon regular polygon respectively equal rhombus right angles right triangle SCHOLIUM secant segments similar square equivalent suppose tangent theorem trapezoid triangle ABC triangles are equal vertex vertical angle Whence
Populære avsnitt
Side 112 - A tangent to a circle is perpendicular to the radius drawn to the point of contact.
Side 244 - The straight line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of it 46 INTERCEPTS BY PARALLEL LINES.
Side 60 - If two triangles have two sides of the one respectively equal to two sides of the other, and the included angles unequal, the triangle which has the greater included angle has the greater third side.
Side 57 - In an isosceles triangle the angles opposite the equal sides are equal.
Side 28 - AXIOMS. 1. Things which are equal to the same thing are equal to one another. 2. If equals be added to equals, the wholes are equal. 3. If equals be taken from equals, the remainders are equal. 4. If equals be added to unequals, the wholes are unequal. 5. If equals be taken from unequals, the remainders are unequal. 6. Things which are double of the same are equal to one another.
Side 48 - If two parallel lines are cut by a transversal, the sum of the two interior angles on the same side of the transversal is two right angles.
Side 53 - America, but know that we are alive, that two and two make four, and that the sum of any two sides of a triangle is greater than the third side.
Side 183 - If from a point without a circle a secant and a tangent are drawn, the tangent is the mean proportional between the whole secant and its external segment.
Side 156 - From this proposition it is evident, that the square described on the difference of two lines is equivalent to the sum of the squares described on the lines respectively, minus twice the rectangle contained by the lines.
Side 179 - If two polygons are composed of the same number of triangles, similar each to each and similarly placed, the polygons are similar.