In Fig. 7.8, `O A"\ "="\ "O B` `a n d"\ "O D"\ "="\ "O C` . Show that (i) `( i i ) (iii)DeltaA O D~=DeltaB O C (iv)` (v) and (ii) `( v i ) (vii) A D"\ "||"\ "B C (viii)` (ix)

In Fig. 7.8, O A\ =\ O B a n d\ O D\ =\ O C . Show that (i) DeltaA O D~=DeltaB O C and (ii) A D\ ||\ B C

In Figure, given that /_A O C=/_A C O\ a n d\ /_B O D=/_B D O . Prove that A C||D B

In Fig. 9.25, diagonals AC and BD of quadrilateral ABCD intersect at O such that O B" "=" "O D . If A B" "=" "C D , then show that: (i) a r" "(D O C)" "=" "a r" "(A O B) (ii) a r" "(D C B)" "=" "a r" "(A C B) (iii) D A" "||" "C

ABCD is a quadrilateral in which and /_D A B\ =/_C B A (see Fig. 7.17). Prove that (i) DeltaA B D~=DeltaB A C (ii) B D\ =\ A C (iii) /_A B D\ =/_B A C

ABCD is a quadrilateral in which and /_D A B\ =/_C B A (see Fig. 7.17). Prove that (i) DeltaA B D~=DeltaB A C (ii) B D\ =\ A C (iii) /_A B D\ =/_B A C

In Figure, O is the mid point of A B and C D . Prove that (i) A O C~= B O D (ii) AC=BD

In Figure altitudes AD and CE of A B C intersect each other at the point P. Show that:(i) DeltaA E P~ DeltaC D P (ii) DeltaA B D ~DeltaC B E (iii) DeltaA E P~ DeltaA D B (iv) DeltaP D C ~DeltaB E C

In Fig.39, A O=O B and /_A=/_B . (i) Is DeltaA O C~=DeltaB O D ? (ii) State the matching pair you have used, which is not given in the question. (iii) Is it true to say that /_A C O=/_B D O ?

In Figure O is the mid-point of A B\ a n d\ C Ddot Prove that \ A O C~=\ \ B O D (b) A C=B D (iii) A C||B D

In Fig. 8,\ /_A O C\ a n d\ /_B O C form a linear pair. Determine the value of xdot