ID NAME QUALITY USERS ACC % DIFFICULTY C I
26445 Alicias Afternoon Amble   11 179
20
26
780 The Archipelago   25
45
34
397 I Conduit   3 183
28
28
35 Equipment Box   5 1043
8
20
34481 Galactic Division   2 8
12205 Minimum Bounding Rectangle   3 1264
8
4
15709 Two Circles   6 1313
3
3
40 Lifting the Stone   6 1397
13
16

#plane-geometry

The problem involves Cartesian plane geometry

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