Question

which of the following pairs of angles are supplementary?
a. 56°,34°
b. 160° ,20°
c. 90°,90°
d. 110°,70°
e. 155°,35°
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Answer 1

Answer:

b,c,d are supplementary angles

Step-by-step explanation:

Supplementary are those angles whose sum is 180 degree

(a) 56°+34° = 90°(this is not supplementary angle this is complementary angle because sum is 90°)

(b) 160°+20°=180°(this is supplementary angles because sum is 180°)

(c) 90°+90°=180°(supplementary angle)

(d)110°+70°=180°(supplementary angle)

(e)155°+35°=190°(this is not supplementary angle)

Answer 2

Step-by-step explanation:

note: that supplementary angles are either of two angles whose sum is equal to 180°

therefore: (b) 160° + 20° = 180°

(c) 90° + 90° = 180°

(d) 110° + 70° = 180°

(e) 155° + 35° = 180°

so only 56° + 34° = 90°

so (a) is not a supplementary angle but (b),(c),(d),and(e) are all supplementary angles