question_answer

Which of the following examines the congruence of plane figures?

A)  Trial and error method             

B)  Superposition method

C)  Substitution method               

D)  Transposition method

Correct Answer: B

Solution :

(b): Superposition means that if we correctly superimpose sides of one plane figure with sides of another plane figure, they completely overlap each after for e.g.; Then,  \[\Delta \,BCD\cong QRSP\] if \[AB=QR:BC=SR\] \[CD=SP\] and \[DA=PQ\].