Find the measure of each angle indicated

plz this is very important due tomorrow

Step-by-step explanation:

answer 1) 122°

using angles sum property of a triangle:

65°+57°+x=180°

x=180-(65+57)

=122°

2) 50°

using angles sum property of a triangle:

90°+40°+x=180° (since shown right angled triangle)

x=180-(90+40)

=50°

similarly,3) 30°

4) 45°