The points `(-a ,-b),(a , b),(a^2,a b)` are (a) vertices of an equilateral triangle (b) vertices of a right angled triangle (c) vertices of an isosceles triangle (d) collinear

The points (a , b),(c , d), and ((k c+l a)/(k+l),(k d+l b)/(k+l)) are (a) vertices of an equilateral triangle (b) vertices of an isosceles triangle (c) vertices of a right-angled triangle (d) collinear

The third vertex of an equilateral triangle whose vertices are (2, 4), (2, 6)

The three points (-2,2)(9,-2),a n d(-4,-3) are the vertices of (a) an isosceles triangle (b) an equilateral triangle (c) a right-angled triangle (d) none of these

The vertices of a triangle are at the vertices of an octagon. The number of such triangles are

The points (0,8/3),(1,3) , and (82 ,30) are the vertices of (A) an obtuse-angled triangle (B) an acute-angled triangle (C) a right-angled triangle (D) none of these

Two vertices of an equilateral triangle are (-1,0) and (1,0) then its circumcircle is

Show that the points A (1,1,1), B (1,2,3) and C (2,-1,1) are vertices of an isosceles triangle.

The centroid of an equilateral triangle is (0,0). If two vertices of the triangle lie on x+y = 2sqrt(2) , then find all the possible vertices fo triangle.

Show that the points A(4, 7 ) B (8,4) and C(7,11) are the vertices of a right angled triangle.