[" The base of "224],[" angle is equal to "45^(@).A" straight line cuts the exterasion of the "],[" base at a point "M" at the angle "theta" and bisects the lateral sid of the "],[" triangle which is nearest to "M" ."],[" Fhe area of quadrilateral which the straight line cuts off "],[" from the given triangle is "(3+5tan theta)/(1+tan theta)],[[" (3) "(3+tan theta)/(1-tan theta)," (4) "(3+2tan theta)/(1+tan theta)]]