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Question
What is the area of the triangle formed by the points O (0, 0), A (6, 0) and B (0, 4)?
Solution
The given triangle ΔOAB is a right angled triangle, right angled at O. the co-ordinates of the vertices are O (0, 0) A (6, 0) and B (0, 4).
So,
Altitude is 6 units and base is 4 units.
Therefore,
ar ( ΔOAB ) = `1/2` (Base )( Altitude )
`= 1/2 `( 4 ) ( 6 ) sq . units
= 12 sq . units
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