L14_A
Pigeonhole Principle
L14_B
Example_1997
Example_Triangle with 5 points
Example_Some vertexes with 2 color lines
Title
第1節
第2節
Syllabus
L14_A
Pigeonhole Principle
L14_B
Example_1997
Example_Triangle with 5 points
Example_Some vertexes with 2 color lines