4. angle1 and angle2 are complementary. So,x+3x+30=904x=60x=15°5. angleZ is liner angle,Z+43=180z=180-43=137°6. The sum of two angles,53°+127°=180°so,These two angle are supplementary angles.7. The sum of these 2 angles,34°+56°=90°so,These two angle are complementary angles. 8. The two angle are equal =67°So,answer is neither.