Right

Straight

Acute

Obtuse

90^o

45^o

150^o

180^o

Consecutive interior angles

Alternate angles

Vertical angles

Corresponding angles

60^o

45^o

90^o

30^o

Supplementary

Equal

Complementary

None of these

A line

An angle

Perpendicular lines

Parallel lines

 1 and  3

 5 and  4

 8 and  1

 6 and  2

40^o and 40^o

40^o and 140^o

50^o and 130^o

90^o and 90^o

Are parallel

Are not parallel because the two given consecutive interior angles do not add to 180^o

Are not parallel because the two given corresponding angles are not equal

Are not parallel because the two given alternate angles are not equal

Equilateral

Isosceles

Right

Scalene