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.103, P Q R S\ a n d\ /_P A B=60^0\ a n d\ /_A C S=100^0dot Then, /_B A C= (a) ( b ) (c) (d) (e) 40^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 60^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 80^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 50^(( q )0( r ))( s ) (t) (u)

In Fig.103, P Q R S\ a n d\ /_P A B=60^0\ a n d\ /_A C S=100^0dot Then, /_B A C= (a) ( b ) (c) (d) (e) 40^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 60^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 80^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 50^(( q )0( r ))( s ) (t) (u)

In Fig.93, if A O C is a straight line, then x= (a) ( b ) (c) (d) (e) 42^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 52^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 142^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 38^(( q )0( r ))( s ) (t) (u)

In Fig.93, if A O C is a straight line, then x= (a) ( b ) (c) (d) (e) 42^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 52^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 142^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 38^(( q )0( r ))( s ) (t) (u)

The measure of an angle which is its own complement is (a) ( b ) (c) (d) (e) 30^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 60^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 90^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 45^(( q )0( r ))( s ) (t) (u)

The measure of an angle which is its own complement is (a) ( b ) (c) (d) (e) 30^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 60^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 90^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 45^(( q )0( r ))( s ) (t) (u)

/_A is an obtuse angle. The measure of /_A and twice its supplementary differ by 30^0dot Then, /_A can be (a) ( b ) (c) (d) (e) 150^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 110^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 140^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 120^(( q )0( r ))( s ) (t) (u)

/_A is an obtuse angle. The measure of /_A and twice its supplementary differ by 30^0dot Then, /_A can be (a) ( b ) (c) (d) (e) 150^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 110^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 140^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 120^(( q )0( r ))( s ) (t) (u)

In Fig.97, If A B is parallel to CD, then the value of /_B P E is (a) ( b ) (c) (d) (e) 106^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 76^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 74^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 84^(( q )0( r ))( s ) (t) (u)

In Fig.97, If A B is parallel to CD, then the value of /_B P E is (a) ( b ) (c) (d) (e) 106^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 76^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 74^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 84^(( q )0( r ))( s ) (t) (u)