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asked Jan 2, 2023 219k views

1 Answer

Atefth · Answer 1 · 2023-01-07T05:33:45+0000

Given a triangle with base b and perpendicular height h, then

$\text{ the area of the triangle = }(1)/(2)* bh$

b = m, h = n,

$\text{ the area of the triangle = }(1)/(2)mn$

Given a rectangle with length l and width w, then

$\text{ the area of the rectangle = }l* w$

In this case,

l = n and w = m

Therefore,

$\text{ the area of the rectangle = }mn$

Therefore,

the area of the triangle TRI is half the area of the rectangle RECT