*Complete this quiz after the lesson by checking one answer per question.*

1. In collision detection you compare two

- [ ] circles and whether they intersect
- [ ] rectangles and whether they intersect
- [ ] the distance between two points

2. The reason for implementing a *cooldown* effect is because

- [ ] Making the game harder as you can't repeatedly fire a laser to destroy enemies
- [ ] JavaScript can only produce a certain number of events per time unit, so you need to limit them