Show that the straight lines `7x-2y + 10 = 0, 7x + 2y - 10 = and y + 2 = 0` form an isosceles triangle and find its area.

Show that the straight lines : x-y-1=0, 4x + 3y = 25 and 2x-3y + 1 = 0 are concurrent.

Show that the three straight lines 2x-3y + 5 = 0 , 3x + 4y - 7 = 0 and 9x- 5y + 8 = 0 meet in a point

Show that the lines x^2-4xy+y^2=0 and x+y=3 form an equilateral triangle and find its area.

Consider the straight lines x + 2y + 4 = 0 and 4x+ 2y - 1 = 0 . The line 6x + 6y + 7 = 0 is

Find the area of the triangle formed by the straight lines 7x-2y+10=0, 7x+2y-10=0 and 9x+y+2=0 (without sloving the vertices of the triangle).

Three straight lines 2x+11y-5=0, 24x+7y-20=0 and 4x-3y-2=0

The straight lines x+y=0, 3x+y=4 and x+3y=4 form a triangle which is

The angle between the straight lines 2x-y+3=0 and x+2y+3=0 is-

Find the area of the triangle formed by the lines y-x = 0, x + y = 0 and x-k = 0.

If the area of the parallelogram formed by the lines 2x - 3y + a = 0 , 3x - 2y - a = 0 , 2x - 3y + 3a = 0 and 3x - 2y - 2a = 0 is 10 square units , then a =