Question

find the sizes of unknown angles.​

Answer 1

Answer:

x= 30 a=60

2x= 60 b= 40

3x = 90 2b = 80

*all are in, degree

Step-by-step explanation:

for x:

2x+3x+x = 180

6x = 180

x = 180/6

= 30

for a:

x+3x+a =180

from, above

a= 180-120

=60

for b:

2x+b+2b = 180

60+3b = 180

3b = 120

b= 40

hope this help, u

Answer 2

Answer:

x=30°

opposite angles are equal so, 2x°=a°

2×30°=a°

60°=60°

b°=40°