Answer the following: Show that the points `(9,1),(7,9),(-2,12)`and `(6,10)` are concyclic.

Show that the points (3,-2),(1,0),(-1,-2) and (1,-4) are concyclic.

Show that point P(-3,2) Q(1, -2) and R(9, -10) are collinear

Answer the following questions.Evaluate |(2,-5,7),(5,2,1),(9,0,2)|

Answer the following questions.Evaluate |(1,-3,12),(0,2,-4),(9,7,2)|

Show that the points A(1,2),B(4,3),C(1,0) and D(-2,-1) are the vertices of a parallelogram.

Show that the line segment joining the points (5,7), (3,9) and (8,6), (0,10) bisect each other.

Choose the correct alternative answer for cach of the following question What is the median of 7, 10, 7, 5, 9, 10 ?