In Figure, lines `A B ,\ C D\ a n d\ E F` intersect at `Odot` Find the measures of `/_A O C ,\ /_C O F ,\ /_D O E\ a n d\ /_B O F` .

In Figure, lines A B ,\ C D\ a n d\ E F intersect at O . Find the measures of /_A O C ,\ /_C O F ,\ /_D O E\ a n d\ /_B O F .

A B C D is a square. A C\ a n d\ B D intersect at O . State the measure of /_A O B .

Two lines A B\ a n d\ C D intersect at Odot If /_A O C+/_C O B+/_B O D=270^0 , find the measures of /_A O C ,\ /_C O B ,\ /_B O D and /_D O A .

Two lines A B\ a n d\ C D intersect at Odot If /_A O C+/_C O B+/_B O D=270^0 , find the measures of /_A O C ,\ /_C O B ,\ /_B O D and /_D O A .

In Figure, lines A B\ a n d\ C D intersect at O . If /_A O C+\ /_B O E=70^0 and \ /_B O D=40^0, find /_B O E and reflex /_C O E

In Figure, find x . Further find /_B O C ,\ /_C O D\ a n d\ /_A O D .

In Fig.25, find /_xdot Further find /_B O C ,\ /_C O D\ a n d\ /_A O Ddot

In Figure, If A B || C D\ a n d\ C D\ || E F , Find /_A C E .

In Fig. 71, if A B C D\ a n d\ C D E F ,\ find \ /_A C E

In Figure, A B C D\ a n d\ A E F G are parallelograms. If /_C=55^0, what is the measure of /_F ?