The statement that is true regarding the angles is determined as m∠7 = m∠3 + m∠2. (Option 4).
How to determine the statement about the angles that is always true.
The statement that is true regarding the angles is determined as follows;
Using exterior angle theorem, which states that the measure of an exterior angle of a triangle is equal to the sum of the measures of its two opposite interior angles.
m∠3 + m∠4 = m∠1
Also another equation would be;
m∠7 = m∠3 + m∠2
So the statement given in option 1 is false, while the statement given in option 4 is always true based on the exterior angle theorem.