The coordinates of the three points
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/07 10:04:22
The coordinates of the three points A.B.C on the plane are (-5,-5),(-2,-1)and(-1,-2)respectively,the triangle ABC is( )
(英汉小词典:right直角的;isosceles等腰的;equilateral等边的;obtuse钝角的)
A. a right trisngle
B. an isosceles triangle
C. an equilateral triangle
D. an obtuse triangle
(英汉小词典:right直角的;isosceles等腰的;equilateral等边的;obtuse钝角的)
A. a right trisngle
B. an isosceles triangle
C. an equilateral triangle
D. an obtuse triangle
![The coordinates of the three points](/uploads/image/z/7346360-56-0.jpg?t=The%26nbsp%3Bcoordinates%26nbsp%3Bof%26nbsp%3Bthe%26nbsp%3Bthree%26nbsp%3Bpoints)
![](http://img.wesiedu.com/upload/7/7b/77b0b2cd6dc074f792a5552ecf0e842f.jpg)
即:AB2=25
同理:AC2=[(-1)-(-5)]2+[(-2)-(-5)]2,即:AC2=25,
BC2=[(-1)-(-2)]2+[(-1)-(-2)]2,BC2=2,
∴AB=AC.
故选B.
The coordinates of the three points
_ of the te
The doctor thought  
The government &nbs
If the ratio of the degree of&
英语翻译The potential exacerbation of socioe
The sweater is _______ of wool. [ ]
The capital of France is _________. [ &
Refer to the exhibit. Which three&n
1. three (序数词) &
The number of pandas(熊猫)  
On ______ sides of the street