Question

Find the unknown angles by using exterior angle property of the triangle ​

Answer 1

Answer:x = 150, a = 30


Step-by-step explanation:
3a + 2a + a = 180 deg.
6a = 180 deg |:6
a = 30

So:
Angle „a” = 30 deg.
Angle „2a” = 60 deg.
Angle „3a” = 90 deg.

And x creates with angle „a” an half full angle, which is 180 deg.
So:
A+x = 180
30 + x = 180
x = 150