Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 313
Reproduced from Models made by High School Students BOOK VI 303 Proposition II. Theorhm 616. If two -planes intersect, their intersection is ast7ai£ht line*
Geometry, Plane · Geometry, Solid
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