Adjacent angles have

(a)

no common interior, no common arm, no common vertex

(b)

one common vertex, one common arm, common interior

(c)

one common arm, one common vertex, no common interior

(d)

one common arm, no common vertex, no common interior

In the given figure the angles ∠1 and ∠2 are

(a)

opposite angles

(b)

Adjacent angles

(c)

Linear pair

(d)

Supplementary angles

Vertically opposite angles are

(a)

not equal in measure

(b)

complementary

(c)

supplementary

(d)

equal in measure

The sum of all angles at a point is

(a)

360°

(b)

180°

(c)

90°

(d)

0°

The measure of \(\angle\)BOC is

(a)

90°

(b)

180°

(c)

80°

(d)

100°