Full Idea
Geometry can be brought into line with logicism simply by identifying figures with arithmetical relations with which they are correlated thought analytic geometry.
Gist of Idea
If analytic geometry identifies figures with arithmetical relations, logicism can include geometry
Source
Willard Quine (Truth by Convention [1935], p.87)
Book Reference
Quine,Willard: 'Ways of Paradox and other essays' [Harvard 1976], p.87
A Reaction
Geometry was effectively reduced to arithmetic by Descartes and Fermat, so this seems right. You wonder, though, whether something isn't missing if you treat geometry as a set of equations. There is more on the screen than what's in the software.