Question

What is the formula for the area of:

trapezoid
rhombus
triangle
n-gon
Thanks in advance!

Answer 1

Trapezoid:

`A=(1)/(2)h(b_(1)+b_(2))`

Rhombus:

`A=(1)/(2)d_(1)d_(2)`

Triangle:

`A=(1)/(2) bh`

N-gon:

`A=n*(1)/(2) as\\\\A=(1)/(2) ap`

Explanation:

In the trapezoid, h is the height and b is the base.

In the rhombus, d is the diagonal.

In the triangle, b is the base and h the height.

In the n-gon, n is the sides of the n-gon, a is the apothem, s is the side, and p is the perimeter.