Given that the straight line of square ABCD passing through point C intersects the extension lines of AD and ab with points E and f respectively, and AE = 10 and AF = 15, the side length of square ABCD is calculated

Given that the straight line of square ABCD passing through point C intersects the extension lines of AD and ab with points E and f respectively, and AE = 10 and AF = 15, the side length of square ABCD is calculated

Let the side length of the square be x, FB ratio FA equal to BC ratio AE is 10-x / 10 = x / 15, get x = 6, extend the intersection of BC and e at k AB = Ke = 6, AE = BK = 15, let CG be Z, get BC / BK = CG / EK, 6 / 15 = Z / 6 with similar triangle, get CG equal to 2.4, draw a picture, and you'll understand it. It's a good trouble to add some points to it!!!