http://www.irfanschoolsawfar.com/mathematics-f1/-t1.htm Thu, 01 Oct 2009 17:48:02 GMT 10 http://i87.servimg.com/u/f87/12/67/16/46/eng_fo10.jpg http://www.irfanschoolsawfar.com/mathematics-f1/-t1.htm http://www.irfanschoolsawfar.com/mathematics-f1/the-midsegment-theorem-t89.htm rabih sarieddeen In a triangle,the segment joining the sides of the 2 midpoints of these sides is parallel to the third side in the triangle(other than the 2 sides which the segment joins their midpts.)and is equal to half of it.
In a trapezoid,the segment joining the midpoints of the legs(the 2 nonparallel sides),is parallel to both the bases(parallel sides)and is equal to half their sum.]]> Mathematics Thu, 26 Feb 2009 14:36:48 GMT http://www.irfanschoolsawfar.com/mathematics-f1/the-midsegment-theorem-t89.htm#463 http://www.irfanschoolsawfar.com/mathematics-f1/the-midsegment-theorem-t89.htm http://www.irfanschoolsawfar.com/mathematics-f1/how-to-rationalize-a-fraction-t119.htm rabih sarieddeen To rationalize a fraction,you should eliminate the radical* sign from it's denominator,and to do that you should multiply that fraction's numerator and denominator by a polynomial or a number that can elminate the radical;for example:if the denominator of the fraction is radical2,you should multiply the numerator and denominator of that fraction by radical 2 so that the denominator will become 2... (Radical*:a mathematical sign used to reduce a number to its square root) Mathematics Thu, 01 Oct 2009 17:48:02 GMT http://www.irfanschoolsawfar.com/mathematics-f1/how-to-rationalize-a-fraction-t119.htm#714 http://www.irfanschoolsawfar.com/mathematics-f1/how-to-rationalize-a-fraction-t119.htm http://www.irfanschoolsawfar.com/mathematics-f1/pythagorean-theorem-t73.htm rabih sarieddeen By rabih sariedden,grade 8A.]]> Mathematics Thu, 12 Feb 2009 19:03:02 GMT http://www.irfanschoolsawfar.com/mathematics-f1/pythagorean-theorem-t73.htm#389 http://www.irfanschoolsawfar.com/mathematics-f1/pythagorean-theorem-t73.htm http://www.irfanschoolsawfar.com/mathematics-f1/how-to-prove-that-2-triangles-are-congruent-t94.htm rabih sarieddeen If you were asked to prove that 2 given triangles are congruent,you should make sure that one of the following methods is satisfied: -By returning to the given,you can prove that 2 sides in both triangles are equal,and each angle enclosed by these 2 sides in both triangles is equal to the other,we call this method "side-angle-side"or S.A.S. -Another method is to prove that 1 side in both triangles is equal and the angles corresponding to it in both triangles are equal, we call this ... Mathematics Thu, 19 Mar 2009 18:02:51 GMT http://www.irfanschoolsawfar.com/mathematics-f1/how-to-prove-that-2-triangles-are-congruent-t94.htm#607 http://www.irfanschoolsawfar.com/mathematics-f1/how-to-prove-that-2-triangles-are-congruent-t94.htm http://www.irfanschoolsawfar.com/mathematics-f1/the-beauty-of-mathematics-t40.htm Neyoula aljurdi Here is an interesting and lovely way to look at the beauty of mathematics. 1 x 8 + 1 = 9 12 x 8 + 2 = 98 123 x 8 + 3 = 987 1234 x 8 + 4 = 9876 12345 x 8 + 5 = 987 65 123456 x 8 + 6 = 987654 1234567 x 8 + 7 = 9876543 12345678 x 8 + 8 = 98765432 123456789 x 8 + 9 = 987654321 1 x 9 + 2 = 11 12 x 9 + 3 = 111 123 x 9 + 4 = 1111 1234 x 9 + 5 = 11111 12345 x 9 + 6 = 111111 123456 x 9 + 7 = 1111111 1234567 x 9 + 8 = 11111111 12345678 x 9 + 9 = 111111111 123456789 x 9 +10= 1111111111 9 ... Mathematics Wed, 24 Dec 2008 19:53:55 GMT http://www.irfanschoolsawfar.com/mathematics-f1/the-beauty-of-mathematics-t40.htm#117 http://www.irfanschoolsawfar.com/mathematics-f1/the-beauty-of-mathematics-t40.htm http://www.irfanschoolsawfar.com/mathematics-f1/remarkable-identities2-t80.htm rabih sarieddeen (X-Y)^2=X^2-2XY+Y^2.
(X+Y)(X-Y)=X^2+Y^2.
(X+Y)^2=X^2+2XY+Y^2.]]> Mathematics Tue, 17 Feb 2009 17:26:30 GMT http://www.irfanschoolsawfar.com/mathematics-f1/remarkable-identities2-t80.htm#424 http://www.irfanschoolsawfar.com/mathematics-f1/remarkable-identities2-t80.htm