AMC 10 Step by Step
2020 AMC 10BProblem 13P11-15~4 minPrint

Andy the Ant lives on a coordinate plane and is currently at (20,20)(-20, 20) facing east (that is, in the positive xx -direction). Andy moves 11 unit and then turns 9090^{\circ} left. From there, Andy moves 22 units (north) and then turns 9090^{\circ} left. He then moves 33 units (west) and again turns 9090^{\circ} left. Andy continues his progress, increasing his distance each time by 11 unit and always turning left. What is the location of the point which Andy makes the 20202020 left turn?

Log in to save your progress.

Similar problems

Problem © Mathematical Association of America (MAA), American Mathematics Competitions. Reproduced for non-commercial educational use. Solution and commentary are original to this site.