Question

Maths teacher draws a straight-line. AB shown on the blackboard as per the following figure.

i. Now he told Raju to draw another line CD as in the figure
ii. The teacher told Ajay to mark ∠AOD as 2c
iii. Suraj was told to mark ∠AOC as 4b
iv. Clive made an angle named as ∠COE = 600
v. Peter marked ∠BOE and ∠BOD as a and b respectively.
(a) What is the value of a?
(i) 480

(ii) 960

(iii) 1000

(iv) 1200

(b) What is the value of b?
(i) 480

(ii) 960

(iii) 1000

(iv) 240

(c) What is the value of c?
(i) 480

(ii) 960

(iii) 420

(iv) 1200

(d) What should be the value of a + 2c?
(i) 1480

(ii) 3600

(iii) 1800

(iv) 1200

(e) What is the relation between b and c?
(i) 2b + c = 900

(ii) 2b + c = 1800

(iii) 4b + 2c = 1200

(iv) y = 2c

Answer 1

Answer:

i 96°

ii 24°

iii 42°

iv 180°

v 2y +z = 90°

Answer 2

Step-by-step explanation:

y=60+y+4y=180

5y=180-60

5y=120

y=120/5

y=24

x

60+x+y

60+x+24=180

x+24=180-60

x+24=120

x=120-24

x=96

z

96+z=180

2z=180-96

2z=84

z=84/2

z=42