Mathematics for IGCSE & O level - Mensuration (Section 3 - No. 28)
What is the definition of height in the context of calculating the area of a triangle?
The longest side of the triangle.
The distance from the base to the opposite vertex, measured perpendicularly.
The distance around the triangle.
Half the length of the base.
Explication
The height must be measured perpendicularly to the base of the triangle.