Step-by-step explanation:
The sum of the interior angles of a triangle is equal to 180°. So from the figure, we can see that
[tex]m + 2m + (m + 10) = 180[/tex]
Collecting all similar terms, we get
[tex]4m + 10 = 180 \Rightarrow 4m = 170[/tex]
or
[tex]m = 42.5°[/tex]
So the angle measures are now as follows:
[tex]m = 42.5°[/tex]
[tex]2m = 85°[/tex]
[tex]m+ 10 = 52.5°[/tex]
