1. √13,√10,√5
2. √11,√10,√5
3. √13,√20,√15
4. √23,√10,√5
√13,√10,√5
1. collinear
2. vertices of a right angled triangle
3. vertices of an equilateral triangle
4. vertices of an isosceles triangle
collinear
1. (2n+1-n2-n-2)/2(n+1)
2. 2n+2+n2+n-2)/(n+1)
3. 3n+2-n2-n-2)/(n+1)
4. none
(2n+1-n2-n-2)/2(n+1)
1. collinear
2. vertices of a right angled triangle
3. vertices of an equilateral triangle
4. vertices of an isosceles triangle
collinear
1. (k+1)n+1-1/n+1
2. (k-1)n+1-1/n+1
3. (k-1)n+1+1/n+1
4. (k+1)n+1+1/n+1
(k+1)n+1-1/n+1
1. 1/n+1
2. 4n/n+1
3. 3n+1-1/n+1
4. 4n+1-1/n+1
3n+1-1/n+1
1. n.2n+1/(n+1)(n+2)
2. n.2n+5/n
3. n.2n+1+1/(n+1)(n+2)
4. none
n.2n+1+1/(n+1)(n+2)
1. isosceles triangle
2. equilateral triangle
3. right angled triangle
4. right angled isosceles triangle
equilateral triangle
1. (2n+2-1)/(n+1)(n+2)
2. (2n+2+n+1)/(n+1)(n+2)
3. (2n+2-n-3)/(n+1)(n+2)
4. (2n+1+n+3)/(n+1)(n+2)
(2n+2-n-3)/(n+1)(n+2)
1. 1/n+1
2. 1/n+2
3. 1/n(n+1)
4. 1/(n+1)(n+2)
1/(n+1)(n+2)