D and E are the mid points of the sides AB and AC respectively of ΔABC. DE is produced to F. To prove that CF is equal and parallel to DA, we need an additional information which is : [NCERT Exemplar Problems]
A. ∠DAE = ∠EFC
B. AE = EF
C. DE = EF
D. ∠ADE = ∠ECF
Answer:C
D and E are the mid points of the sides AB and AC respectively of ΔABC. DE is produced to F. To prove that CF is equal and parallel to DA, we need an additional information which is : [NCERT Exemplar Problems]
A. ∠DAE = ∠EFC B. AE = EF C. DE = EF D. ∠ADE = ∠ECF