Hi there!
Let's solve this problem step by step!
The sum of the angles measures 360°, which is given in the question.
We can also express the sum of the angles as a sum of variables. To do this we must add all the variables a.
[tex]a + a + 2a + 2a =[/tex]
Collect terms.
[tex]6a[/tex]
When we have this expression and the sum of the angles, we can set up and solve an equation.
[tex]6a = 360[/tex]
Divide both sides by 6.
[tex]a = \frac{360}{6} = 60[/tex]
Therefore a = 60°
~ Hope this helps you!
