Question

If two triangles are in perspective, then the intersection points of corresponding sides of the two triangles will be______.
a. coplanar
c. coangular
b. collinear
d. coagulate

Answer 1

i'm also just learning bout this ,
i'm sorry

but i should give so clue 
 
in a projective plane, two triangles are said to be perspective from a point if the three lines joining corresponding vertices of the triangles meet at a common point called the center. ... Desargues' Theorem: If two triangles are perspective from a point then they are perspective from a line.