Question

ab and cd are the straight line intersect each other at point 4 find a,b,c it's urgent ​

Answer 1

Answer:

As a = 2b for vertically opposite angles so

70 +3b +2b = 180 (angles on a straight line)

70+5b =180

5b = 180 - 70

5b= 110

b=22

As a =2b

So

a = 2 ( 22)

a = 44

For Angle c

4c + a = 180

4c + 44 = 180

4c =180 - 44

4c = 136

C = 136 /4

c= 34

Answer 2

a = 44 , b = 22 , c = 34

$\bf\underline{Consider \: AB }$

• 2b + 70 + 3b = 180

• 5b = 180 - 70

• = 110

• b = 110 / 5

• $\bf\red{ = 22 ° }$

$\bf 2b = 2 × 22 = 44°$

$\bf 3b = 3 × 22 = 66°$

$\bf\underline{ Now \: consider \: DC}$

• 2b + 4c = 180

• 4c = 180 - 44

• c = 136 / 4

• $\bf\red{ = 34°}$

$\bf 4c = 136$

$\bf\underline{ Now \: consider \: AB}$

• 4c + a = 180

• a = 180 - 136

$\bf\red{ a = 44 ° }$