①△ABC的内角平分线上的点到三边距离相等
②三角形的三条内角平分线交于一点
③三角形的内角平分线位于三角形的内部
④三角形的任一内角平分线将三角形分成面积相等的两部分．
(C)
Harry Potter and the Deathly Hallows
By J.K. Rowling, paperback (平装书), 784 pages.
Publisher (出版商): Arthur Levine Books (07/07/2009)
Reading level: Age 9~12
Price: $16.69
Deceptively Delici
By Jessica Seinfeld, hard cover (精装书), 204 pages.
Publisher: Collins (09/01/2007)
Reading level: Parents
Price: $12.83
Rich Dad, Poor Dad
By Robert T. Kiyosaki, paperback, 266 pages.
Publisher: Business Plus(01/01/2010)
Reading level: Age 20~25
Price: $5.59
The Road
By Cormac McCarthy, paperback, 304 pages.
Publisher: Vintage Books (09/11/2007)
Reading level: Adults
Price: $5.50
