The vertices of a triangle have integer co- ordinates then the triangle cannot be

If all the vertices of a triangle have integral coordinates, then the triangle may be (a) right-angled (b) equilateral (c) isosceles (d) none of these

If the vertices of a triangle have rational coordinates, then prove that the triangle cannot be equilateral.

(6, 0), (0, 6) and (7, 7) are the vertices of a triangle. The circle inscribed in the triangle has the equation

In each of the following vertices of a triangles are given. Find the coordinates of centroid of each triangle. (4, 7), (8, 4), (7, 11)

In each of the following vertices of a triangles are given. Find the coordinates of centroid of each triangle. (3, -5), (4, 3), (11, - 4)

In each of the following vertices of a triangles are given. Find the coordinates of centroid of each triangle. (-7, 6), (2, -2), (8, 5)

Let A(0,beta), B(-2,0) and C(1,1) be the vertices of a triangle. Then Angle A of the triangle ABC will be obtuse if beta lies in

Let a,b,c be the sides BC, CA, AB of DeltaABC on xy plane. If abscissa and ordinate of vertices of the triangle are integers and R is the circumradius, then 2R can be equal to

Two vertices of a triangle are (5,-1) and (-2,3) If the orthocentre of the triangle is the origin, find the coordinates of the third point.

Two vertices of a triangle are (4,-3) & (-2, 5) . If the orthocentre of the triangle is at (1,2) , find coordinates of the third vertex .