Plot the points (2, 3), (6, 3) and (4, 7) in a graph sheet. Join them to make it a triangle. Find the area of the triangle.

Plotting the points :

Joining the points to form a triangle and finding its area :

Finding the area :

From the graph, we can see that,

H = 4 units

B = AB = 4 units

Area of the triangle = × B × H

= × 4 × 4 = 8 sq. unit.

∴ Area of triangle CAB = 8 sq. unit.