bases of a trapezoid (b_1, b_2)
bases de un trapecio (b_1, b_2)
the two parallel sides of a trapezoid, used in the area formula A = \tfrac{1}{2}(b_1 + b_2)h.
Example
A trapezoid with bases 6 in and 10 in and height 4 in has area \tfrac{1}{2}(6 + 10)(4) = 32\text{ in}^2.
In Spanish
bases de un trapecio (b_1, b_2) — los dos lados paralelos de un trapecio, que se usan en la fórmula del área A = \tfrac{1}{2}(b_1 + b_2)h.
Un trapecio con bases de 6 in y 10 in y altura de 4 in tiene un área de \tfrac{1}{2}(6 + 10)(4) = 32\text{ in}^2.