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Desargue studied A) Perspective geometry. Girard Desargue was the first to discover that a single point at infinity represents the intersection of parallel lines

Answer:

Desargue studied perspective geometry.

Step-by-step explanation:

Desargue studiesd perspective geometry.

If all the intersecting points of corresponding lines lie on the same line, then the figures are said to be perspective from a line.

Desargue was a French mathematician who founded the projective/perspective geometry. In his name we have the Desargues' theorem and the Desargues graph also.