Answer:
Area of a triangle = [tex]\frac{1}{2}[/tex] area of rectangle
Step-by-step explanation:
Given:
Height of triangle = n cm, Â Base of triangle = m
Length of rectangle = n cm, Width of rectangle = m cm
Area of ΔTRI = [tex]\frac{1}{2}[/tex]  base × height
           =  [tex]\frac{1}{2}[/tex]  ( m ) × (n)  ⇒ [tex]\frac{1}{2}[/tex] mn
Area of Rectangle RECT = Â Length Ă— Width
                     = m × n ⇒  = mn
Comparing Area of triangle and rectangle.
[tex]\frac{1}{2}[/tex] mn = Â mn
We can conclude that area of triangle is half of the area of rectangle.
