> In order to run and hot reload app either on emulator or device, follow the [instructions](https://docs.flutter.dev/get-started/test-drive?tab=androidstudio#run-the-app)
###### Was the app committed within the required time period?
###### Does the app run without crashes?
###### Does the ball collide properly, i.e. each time it touches walls or tiles, its angle changes according to the rule: it leaves with the same angle it came?