Right angle trapezoid
Calculators and formulas for calculating a right-angled trapezoid
To calculate the right-angled trapezoid, enter sides a and c, and side b or d. Then click on the 'Calculate' button.
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Formulas for calculating a trapezoid
Side length (a)
\(\displaystyle a=\sqrt{d^2-b^2}+c\)
Side length (b)
\(\displaystyle b=\sqrt{d^2-(a-c)^2}\)
Side length (c)
\(\displaystyle c=a-\sqrt{d^2-b^2}\)
Side length (d)
\(\displaystyle d=\sqrt{(a-c)^2+b^2}\)
Diagonal (e)
\(\displaystyle e=\sqrt{a^2+b^2}\)
Diagonal (f)
\(\displaystyle f=\sqrt{c^2+b^2} \)
Median width (m)
\(\displaystyle m=\frac{a+c}{2} \)
Perimeter (P)
\(\displaystyle P =a+b+c+d \)
Area (A)
\(\displaystyle A=\frac{b ·(a+c)}{2} \)
Angle (α)
\(\displaystyle α=90°-acos\left(\frac{b^2+d^2-(a-c)^2}{2·b·d}\right) \)
Angle (δ)
\(\displaystyle δ=180°-α \)
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