Answer:
Angle x is 40 degrees
Angle 2x is 80 degrees
Angle x + 20 is 60 degrees
Step-by-step explanation:
First, you should know that all three angles of a triangle add up to 180, so you can set up an equation like so:
x + 2x + x + 20 = 180
Combine like terms:
( x + 2x + x ) + 20 = 180
4x + 20 = 180
Subtract 20 from each side:
4x = 160
Divide each side by 4:
x = 40
Then Substitute in to find each angle:
x
40
-------------------
2x
2 ( 40 ) = 80
-------------------
x + 20
40 + 20 = 60
