What is the measurement of < 3 and < 1.
angle 1 is apart of a linear pair.
< 2 is 52°

You can revise: the sum of the two adjacent angles is 180°
and the sum of the measurements of the three corners in a triangle is also 180°
<1= 180°-57°=123°
As <2=52°, so we have <3= 180°-(28°+71°+52°)= 180°-151°=29°
have fun

It’s 24.6 after you round to the nearest tenths the answer should be 25.0