14.若△ABC三条边的长度分别为m,n,p.且|m-n|+(m-p)2=0.则这个三角形为( )
| A. | 等腰三角形 | B. | 等边三角形 | C. | 直角三角形 | D. | 等腰直角三角形 |
8.下列语句中正确的是( )
0 286900 286908 286914 286918 286924 286926 286930 286936 286938 286944 286950 286954 286956 286960 286966 286968 286974 286978 286980 286984 286986 286990 286992 286994 286995 286996 286998 286999 287000 287002 287004 287008 287010 287014 287016 287020 287026 287028 287034 287038 287040 287044 287050 287056 287058 287064 287068 287070 287076 287080 287086 287094 366461
| A. | 延长射线AB到C,使BC=$\frac{1}{2}$AB | B. | 延长线段AB到C,使BC=$\frac{1}{2}$AB | ||
| C. | 反向延长线段AB到C,使BC=$\frac{1}{2}$AB | D. | 反向延长射线AB到C,使BC=$\frac{1}{2}$AB |