To find the measure of the smallest angle in a triangle, you need to find the smallest value among the given angles.
Let's set up an inequality to represent this:
Smallest angle < Middle angle < Largest angle
From the given information, we have the following angles:
x + 10
x + 20
x + 30
To find the smallest angle, we need to find the smallest value among these angles.
Setting up an inequality, we have:
x + 10 < x + 20 < x + 30
Subtracting x from all sides to simplify, we have:
10 < 20 < 30
We see that this inequality is always true. Therefore, all three angles are different, and the smallest angle is x + 10.
So, the measure of the smallest angle is x + 10.