英语翻译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 ( )A、a right triangle B、an isosceles triangle C、an equilateral triangle D、an obtuse triangle
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![英语翻译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 ( )A、a right triangle B、an isosceles triangle C、an equilateral triangle D、an obtuse triangle](/uploads/image/z/5710156-52-6.jpg?t=%E8%8B%B1%E8%AF%AD%E7%BF%BB%E8%AF%91The+coordinates+of+the+three+points+A%2CB%2CC+on+the+plane+are+%28-5%2C-5%29%2C%28-2%2C-1%29+and+%28-1%2C-2%29%2Crespectively%2Cthe+triangle+ABC+is+%28+%29A%E3%80%81a+right+triangle+B%E3%80%81an+isosceles+triangle+C%E3%80%81an+equilateral+triangle+D%E3%80%81an+obtuse+triangle)
英语翻译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 ( )A、a right triangle B、an isosceles triangle C、an equilateral triangle D、an obtuse triangle
英语翻译
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 ( )
A、a right triangle B、an isosceles triangle C、an equilateral triangle D、an obtuse triangle
英语翻译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 ( )A、a right triangle B、an isosceles triangle C、an equilateral triangle D、an obtuse triangle
平面坐标系上有三点A,B,C,分别为(-5,-5),(-2,-1) 和 (-1,-2),三角形ABC是(B)
A、直角三角形B、等腰三角形C、等边三角形D钝角三角形
∴AB=5,AC=5,BC=√2