An athlete starts to run positioning his back towards the Sun once shortly after sunrise and once shortly before sunset. In each scenario, he turns left, then right, and then left again. In which direction is he finally running in both scenarios respectively?

Four birds A, B, C and D started flying to collect food towards the South. After flying 2 km, birds B and D flew towards their left, while birds A and C flew towards their right. After another 3 km, birds A and C flew towards their right, and birds B and D also flew towards their right. In which directions are the birds A, B, C and D respectively flying now?

Point A is 9 m towards the east of point B. Point C is 5 m towards the south of point A. Point D is 3 m towards the west of point C. Point E is 5 m towards the north of point D. Point F is 7 m towards the south of point D. Which of the following points are in a straight line?