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Questions  

The quadrilateral formed by the lines whose equations are given by x25x+6=0 and y214y+40=0 is

a
Square
b
Rectangle
c
Rhombus
d
Parallelogram

detailed solution

Correct option is D

The given lines are x2−5x+6=0 and y2−14y+40=0 It implies that the equations of sides are quadrilateral are x−1=0,x−5=0,y−10=0,y−4=0The sides of quadrilateral are vertical and horizontal lines, so angles are right anglesDistances between corresponding opposite sides are 5−1=4,10−4=6Since the distances between two parallel sides are not equal, and the angles are right angles, the figure formed by the lines is rectangle.

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