Mathematically simple heart shape.  Some have come up with advanced and complex algebraic or trigonometric equations to approximate the heart/love symbol.  This image instead uses two simple perpendicular straight lines and two partial circular arcs.  Mathematically, x and y are related by the following four equations (one applying in each quadrant):

Ist quadrant (x≥0,y≥0)
(x–3.3030615433)2+(y–2.6969384567)2=14.5469540784
IInd quadrant (x≤0,y≥0)
(x+3.3030615433)2+(y–2.6969384567)2=14.5469540784
IIIrd quadrant (x≤0,y≤0)
x+y= –6
IVth quadrant (x≥0,y≤0)
y–x= –6Where the approximate constants in the first two equations have the following exact values:

14.5469540784=144/(√2+√3)2
3.3030615433=(√108)/(√2+√3)
2.6969384567=6–((√108)/(√2+√3))(The first of these is the square of the radius of the circular arcs.)
There's a 90° corner at coordinate point (0,–6) and a 60° corner at (0,4.6039619279).
Where 4.6039619279=6(1–((√3–1)/(√2+√3)))

The width of the area enclosed by the curve is 14.2342169713=12((2+√3)/(√2+√3)), while the height is 12.510985399=12(1+((1–√.75)/(√2+√3)))
Own work
AnonMoos