The figure formed by the lines `a x+-y+-c=0` is a. a rectangle b. a square c. a rhombus d. none of these

Explanation

The given line can be written 4 manner:


`a x+b y+c=0 ldots(1)`


`a x+b y-c=0 ldots(2)`


`a x-b y-c=0 ldots (3)`


`a x-b y-c=0 ldots(4)`


[# XI_RD_23_365]


From graph its clear,


` AB = BC = CD = DA = sqrt{frac{a^{2}}{c^{2}}+frac{b^{2}}{c^{2}}}=sqrt{frac{a^{2}+b^{2}}{|c|}}`


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