ID NAME QUALITY USERS ACC % DIFFICULTY C I
26445 Alicias Afternoon Amble   11 188
20
26
780 The Archipelago   37
34
26
397 I Conduit   3 192
21
21
35 Equipment Box   6 1313
8
21
34481 Galactic Division   2 8
12205 Minimum Bounding Rectangle   7 1491
7
5
15709 Two Circles   7 1509
3
5
40 Lifting the Stone   6 1616
13
16

#plane-geometry

The problem involves Cartesian plane geometry

https://en.wikipedia.org/wiki/Plane_(geometry) http://www.mathopenref.com/planegeometry.html