ҵĴ𰸣B 23
ѿѧĽУ뻳ɾйصǣ1.0֣ 1.0 A һ B ڶ C D ҵĴ𰸣A 24
вʽѧǣ1.0֣ 1.0 A ѧ B ѧ C ѧ
D ͳ ҵĴ𰸣A 25
汾ԭڣ˹ʽӡˢ档1.0֣ 1.0 A 1346 B 1415 C 1482 D 1573 ҵĴ𰸣C 26
ݡסϣڰ֮ǣ1.0֣ 1.0 A Erebus B Nyx
C Chaos D Tartarus ҵĴ𰸣A 27
ԭеǣ1.0֣ 0.0 A
A point is that which has no part. B
A line is breadthless length. C
The ends of a line are points. D
A straight line is a line which lies evenly with the points on itself. ҵĴ𰸣D 28
ոڵʷΪͬʱһΪϯǻ۶츳1.0֣ 1.0 A
̽ B C D ʵ
ҵĴ𰸣B 29
11͵13͵ŷڣ 1.0֣ 0.0 A B C
Ͷʢʱ D ĩ ҵĴ𰸣B 30