trapezium

  1. H

    Prove that two segments in a trapezium are parallel

    We have a trapezium (a quadrilateral with one pair of parallel sides) ABCD, where AB and CD are the (parallel) bases. The perpendicular bisector of side AD intersects with side BC at point E. A line parallel to the line AE and passing throught the point C intersects with side AD at point F...
  2. H

    vectors in a trapezium shape

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  3. C

    Semicircle inscribed in trapezium

    Hi so I'm stuck on another geometry problem: ABCD is a trapezium with a semicircle, centre O, inscribed in it.* If AO=OD, prove that (AO)(OD)=(AB)(CD). I've tried Pythagoras' theorem on the radius, and extending AB and CD to meet but neither of them work. I'd appreciate any hints. Thanks...
  4. H

    Pi Trapezium inscribed circle

    With a small semicircle at the top and three semicircles equal in area around. Two horizontals and two diagonals. 3.1... For example Diagonals 1m 1m Horizontals 1m 1dm Just thought this would be cool, it might have some use, I don't know.
  5. P

    Trapezium rule! Help

    If the trapezium rule is used to measure the integral of f(x)dx between 1 and 0 on the x axis, by splitting the interval 0<= x <= 1, into 10 intervals then an overestimate of the integral is produced. So why does the trapezium rule of 10 intervals underestimate the integral (between 1 and 0)...
  6. P

    Learn How To Derive The Trapezium Rule Formula From Absolute Scratch...

    More videos for those of you who love proofs and logic: Area Of Trapezium Formula - Derived From Scratch: Area Of Trapezium Formula - Derived From Scratch - YouTube Trapezium Rule Formula - Derived From Scratch: Trapezium Rule Formula - Derived From Scratch - YouTube Link to...
  7. V

    one question on trapezium

    Hello! We have isosceles trapezoid. The length of midsegment is 5. The diagonals are mutually orthogonal. How can I find the area of trapezoid? Thanks.
  8. S

    Trapezium Trouble!

    The whole exercise is as follows: What's the lateral surface area of this http://img822.imageshack.us/img822/9717/68692448.th.jpg . I somehow managed to find out that the base is a trapezium, which looks like that: http://i49.tinypic.com/e8punk.png And now my job is to find x. I'd be glad...
  9. E

    Trapezoid problem (trapezium Br.E.)

    The lenght of diognals of trapezoid are 5 and \sqrt{34} . The sum of lenghts of parallel sides is 9. Fi nd the area of trapezoid. answer is 27/2
  10. M

    Area of a Trapezium

    In a trapezium ABCD, AB is parallel to CD, AB=30 cm, BC=15 cm, DC=44 cm and AD=13 cm. Find the area of the trapezium. (Hint: You can use Hero's Formula)
  11. C

    2 trapezium problems

    1.Find the area of an isosceles trapezium if its height is h, if the prong is seen from an angle of 60 degrees from the center of the described circle. I am out of ideas. Don't know how to use the 60 degrees. 2.The bases of a trapezium are 25cm and 15cm, and one prong is 8cm. Calculate the...
  12. C

    Trapezium

    On the picture below, I got a isosceles trapezium whose diagonal divides the bigger angle on two equal angles. b=1cm, S=13cm. I Have to calculate the area of this trapezium, but what bothers me is: How to prove that a=c? Any help appreciated...
  13. M

    Proof in Trapezium angles

    PQRS is an isosceles Trapezium. Please check the below image for better view of the question. [attachment=0:jo8a2q4s]TR.jpg[/attachment:jo8a2q4s] Thank
  14. M

    Help to prove in Trapezium

    PQRS is an isosceles trapezium, where PQ is parallel to SR and PS=QR. PS and QR are extended to meet at O. Prove that SO=RO. Please check the image below for the diagram. http://i.imgur.com/mBp1C.jpg Thanks.
  15. Z

    What is the size of the midline of trapezium?

    In ABCD Trapezium from the middle point of AB side, the line, which is parallel of CD side, divided AD to 2cm and 6,4cm. Find (the size of) midline (midsegment) of Trapezium
  16. L

    Questions on newtons theory and trapezium rule???

    Hey guys i need help on this aspect of maths, see im revising for an exam and need to know the method of working out for these types of questions so i can do it successfully in my exam. Please help me !!!! 1. (a) Determine whether the following series are convergent or divergent, justifying...