The mid-point of the line segment AB shown in diagram is C (4, -3). Write down the coordinates of A and B.

Find the coordinates of the centroid of a triangle whose vertices are :

A(-1, 3), B(1, -1) and C(5, 1).

The vertices of a triangle are A(-5, 3), B(p, -1) and C(6, q). Find the values of p and q if the centroid of the triangle ABC is the point (1, -1).

The points A(9, 0), B(9, 6), C(-9, 6) and D(-9, 0) are the vertices of a

1. rectangle

2. square

3. rhombus

4. trapezium