Elementary Geometry: Practical and TheoreticalUniversity Press, 1903 - 355 sider |
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Side 13
... Charles Godfrey, Arthur Warry Siddons. Ex . 41. Measures AOB , BOD , AOD in fig . 20. Check your results . O A B fig . 21 . Ex . 42. Repeat the last three exercises for fig . 21 . Ex . 43 . Draw a circle ( radius about ANGLES 13.
... Charles Godfrey, Arthur Warry Siddons. Ex . 41. Measures AOB , BOD , AOD in fig . 20. Check your results . O A B fig . 21 . Ex . 42. Repeat the last three exercises for fig . 21 . Ex . 43 . Draw a circle ( radius about ANGLES 13.
Side 14
... circle ( radius about 2.5 in . ) , cut off equal parts from its circumference ( this can be done by stepping off with compasses or dividers ) . Join OA , OB , OF . - LAOF 5 times Measure S AOB , AOF . AOB ? E D F C B Is A fig . 22 . To ...
... circle ( radius about 2.5 in . ) , cut off equal parts from its circumference ( this can be done by stepping off with compasses or dividers ) . Join OA , OB , OF . - LAOF 5 times Measure S AOB , AOF . AOB ? E D F C B Is A fig . 22 . To ...
Side 17
... circle of radius 5 cm .; at its centre make a set of angles each equal to 60 ° ( i.e. 360 ° ) 6 ; join the points where the arms cut the circle the figure you obtain is a hexagon ( 6 - gon ) , and it is said to be inscribed in the circle ...
... circle of radius 5 cm .; at its centre make a set of angles each equal to 60 ° ( i.e. 360 ° ) 6 ; join the points where the arms cut the circle the figure you obtain is a hexagon ( 6 - gon ) , and it is said to be inscribed in the circle ...
Side 18
... circle of radius 5 cm . make a regular pentagon ( 5 - gon ) as in Ex . 70 ; the angles you make at the centre must all be equal and there will be five of them ; what is each angle ? Ex . 73. Calculate the angle at the centre for each of ...
... circle of radius 5 cm . make a regular pentagon ( 5 - gon ) as in Ex . 70 ; the angles you make at the centre must all be equal and there will be five of them ; what is each angle ? Ex . 73. Calculate the angle at the centre for each of ...
Side 19
... radius of the circle . PATTERN DRAWING . Ex . 76. Copy fig . 33 , taking 5 cm . for the radius of the large circle . The dotted lines are at right angles to one another . How will you find the centres of the small circles ? If you ...
... radius of the circle . PATTERN DRAWING . Ex . 76. Copy fig . 33 , taking 5 cm . for the radius of the large circle . The dotted lines are at right angles to one another . How will you find the centres of the small circles ? If you ...
Andre utgaver - Vis alle
Elementary Geometry Practical and Theoretical Charles Godfrey,Arthur Warry Siddons Uten tilgangsbegrensning - 1909 |
Elementary Geometry: Practical and Theoretical Charles Godfrey,Arthur Warry Siddons Ingen forhåndsvisning tilgjengelig - 2015 |
Elementary Geometry: Practical and Theoretical C. Godfrey,A. W. Siddons Ingen forhåndsvisning tilgjengelig - 2020 |
Vanlige uttrykk og setninger
AABC altitude base BC bisects Calculate centimetres centre chord circle of radius circumcentre circumcircle circumference circumscribed common tangent concyclic Constr Construct a triangle Construction Proof cyclic quadrilateral diagonal diameter distance divided Draw a circle Draw a straight equal circles equiangular equidistant equilateral triangle find a point Find the area fixed point Give a proof given circle given line given point given straight line hypotenuse inch paper inscribed intersect isosceles trapezium isosceles triangle LAOB LAPB locus of points Measure miles opposite sides parallelogram perimeter Plot the locus polygon produced protractor Pythagoras Q. E. D. Ex quadrilateral ABCD radii ratio rect rectangle rectangle contained reflex angle Repeat Ex rhombus right angles right-angled triangle segment set square subtends tangent THEOREM trapezium triangle ABC units of length vertex vertical angle
Populære avsnitt
Side 88 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.
Side 269 - To describe an isosceles triangle, having each of the angles at the base double of the third angle.
Side 206 - If a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.
Side 342 - Pythagoras' theorem states that the square of the length of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the lengths of the other two sides.
Side 270 - If a straight line touch a circle, and from the point of contact a chord be drawn, the angles which this chord makes with the tangent are equal to the angles in the alternate segments.
Side 186 - This sub-division shows that the square on the hypotenuse of the above right-angled triangle is equal to the sum of the squares on the sides containing the right angle.
Side 206 - If a straight line be divided into two equal parts, and also into two unequal parts, the rectangle contained by the unequal parts, together with the square on the line between the points of section, is equal to the square on half the line.
Side 136 - To draw a straight line through a given point parallel to a given straight line. Let A be the given point, and BC the given straight line.
Side 214 - A point moves so that the sum of the squares of its distances from the points (0, 0), (1, 0) is constant.
Side 123 - The difference between any two sides of a triangle is less than the third side.