#### The fourth vertex D of a parallelogram ABCD whose three vertices are A (-2, 3), B (6, 7), and C (8, 3) is

(a) (0, 1)

(b) (0, -1)

(c) (-1, 0)

(d) (1, 0)

**Solution:**

#### The centroid of the triangle whose vertices are (3, -7), (-8, 6) and (5, 10) is

(a) (0, 9)

(b) (0, 3)

(c) (1, 3)

(d) (3, 3)

**Solution:**

**More Solutions:**

- ABCD is a parallelogram whose vertices A and B.
- In the adjoining figure, P (3, 1) is the point on the line segment.
- Given, O, (0, 0), P(1, 2), S(-3, 0) P divides OQ in the ratio of 2 : 3.
- Find the slope of a line whose inclination is
- Find the equation of a straight line parallel to y-axis.
- Find the slope and y-intercept of the following lines: