[50 Series][Geometry Problems][Part I] Mathematics Geometry

[50 Series][Geometry Problems][Part II] Mathematics Geometry

[LEGO][乐高][Rhombicosidodecahedron][小斜方截半二十面体] LEGO Geometry

[Problem of the day][数学挑战][Geometry][几何][9][A hard geometric problem] Geometry

[Problem of the day][数学挑战][Geometry][几何][8][Area of non over-lapping region] Geometry

[Problem of the day][数学挑战][Geometry][几何][7][Area of shaded region in a square] Geometry

[Problem of the day][数学挑战][Geometry][几何][6][Area of a sqaure] Geometry

[Problem of the day][数学挑战][Geometry][几何][5][Radii of Circles] Geometry

[Problem of the day][数学挑战][Geometry][几何][2][Big and small circle] Mathematics Geometry

[Problem of the day][数学挑战][Geometry][几何][1][Circumferences] Mathematics Geometry

[Problem of the day][数学挑战][Geometry][几何][4][Downhill] Mathematics Geometry

[Problem of the day][数学挑战][Geometry][几何][3][Point in rectangle] Mathematics Geometry