In Fig 66, `l in e\ l m ,\ /_1=120^0\ ` and `/_2=100^0,` find out `/_3\ a n d\ /_4.`

In Fig.70. if\ l m n\ a n d\ /_1=60^0, find /_2.

In Fig.72, If l m ,\ n p\ a n d\ /_1=85^0, find /_2.

In Fig., if l || m|| n and /_1=60^0, find /_2.

In Fig.104, A B C D ,\ /_O A B=150^0\ a n d\ /_O C D=120^0dot Then, /_A O C= (a) ( b ) (c) (d) (e) 80^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 90^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 70^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 100^(( q )0( r ))( s ) (t) (u)

In Fig.80, line A C l in e\ D E\ a n d\ /_A B D=32^0dot Find out the angles x\ a n d\ y\ if /_E=122^0dot

In Fig. 54, if /_2=120^0\ a n d\ /_5=60^0, show that m||ndot

In Fig. 49, m||n\ a n d\ /_1=65^0dot Find /_5\ a n d\ /_8.

In Fig.20, O E is the bisector of /_B O Ddot if /_1=70^0, find the magnitudes of /_2,\ /_3\ a n d\ /_4.

In Fig. 48, line l\ || line m ,\ n is transversal and /_1=40^0dot Find all the other angles marked in the figure.

In Figure, transversal l intersects two lines m\ a n d\ n , /_4=110^0\ a n d\ /_7=65^0 . Is m|| n ?