 
(i)  Which among the following figures are congruent? (a) A and C (b) E and F (c) D and F (d) B and F 

(ii)  If a line divides any two sides of the triangle in the same ratio, then the line is parallel to the third side. The statement depicts which theorem? (a) Pythagoras theorem ( b) Thales Theorem (c) Converse of Thales theorem (d) Converse of Pythagoras theorem 

(iii)  Which of the following option is correct? (a) All similar figures are congruent (b) All congruent figures are similar (c) Similar figures have same size and shape. (d) None of these 

(iv)  The height of the tree, when its shadow is 84 m long and at the same time a girl 2m high standing in the same straight line casts a shadow 12 m is d) none of these. 

(v)  Using the concept of similarity ,the height of the tree is  
I am giving solution for (ii) (iii) and (iv) For remaining queries kindly ask in another thread.
(ii) If a line divides any two sides of the triangle in the same ratio, then the line is parallel
to the third side. The statement depicts which theorem?
ANS (b) thales theorem
(iii)
All congruent figures are similar all the similar figures are not congruent
Ansso,(b) is correct
(iv)
Regards