Okay first if you want to find the angle of 4, you have to complete the first triangle's angles. So since the 2 angles that are in the triangle are 25° & 52<span>° Then you add them together and get 77</span><span>° Next you subtract 77</span>° from 180°, so you should get 103<span>° for angle 3 Finally you subtract 103</span>° from 180° to complete line segment ←PAL Final Answer: 77<span>°</span>