Q 2400791618.    

NDA 2007 Paper 1 September

Assertion : If two triangles with vertices `(x_1,y_1), (x_2,y_2), (x_3 ,y_3 )` and `(a_1,b_1), (a_2,b_2)`, `(a_3 , b_3 )` satisfy the relation ` |(x_1,y_1,1),(x_2,y_2,1),(x_3,y_3,1)| = |(a_1,b_1,1),(a_2,b_2,1),(a_3,b_3,1)|`, then the triangles are congruent.

Reason : For the given triangles satisfying the above relation implies that the triangles have equal area.

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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