Question

Q.9 From the adjoin figure (a) Find x
(b) Find the supplement of <BOC and also name the same
angle
(c) Find the adjacent angle of <DOC
(d) Do <BOD and <DOA from a linear pair?
20°1 x
40°
20°​

Answer 1

Answer:

Complementary angle = 900 - given angle

(i) Complement of 200 = 900 – 200 = 700

(ii) Complement of 630 = 900 – 630 = 270

(iii) Complement of 570 = 900 – 570 = 330Supplementary angle = 1800 - given angle

(i) Supplement of 1050 = 1800 – 1050 = 750

(ii) Supplement of 870 = 1800 – 870 = 930

(iii) Supplement of 1540 = 1800 – 1540 = 260If sum of two angles is 180, then they are called supplementary angles.

If sum of two angles is 90, then they are called complementary angles.

(i) 650 + 1150 = 1800

These are supplementary angles.

(ii) 630 + 270 = 900

These are complementary angles.

(iii) 1120 + 680 = 1800

These are supplementary angles.

(iv) 1300 + 500 = 1800

These are supplementary angles.

(v) 450 + 450 = 900

These are complementary angles.

(vi) 800 + 100 = 900

These are complementary angles.