Right Angle Deltoid Calculator and Formulas
This calculator calculates a right kite. The right kite (or right-angled deltoid) has two opposite right angles between the short and long sides.
To calculate, enter the lengths of sides a and b. Then click on the 'Calculate' button.
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Area
\(\displaystyle A=a ·b\)
Perimeter
\(\displaystyle U=2 · (a+b)\)
Diagonal e
\(\displaystyle e=\sqrt{a^2+b^2}\)
Diagonal f
\(\displaystyle f=\frac{2·a·b}{e}\)
Angle α
\(\displaystyle α= \frac{2·arccos(a^2+e^2-b^2)}{2·a·e}\)
Angle γ
\(\displaystyle γ=180°-α\)
Incircle radius ri
\(\displaystyle ri=\frac{a·b}{a+b}\)
Outer circle radius rc
\(\displaystyle rc=\frac{e}{2}\)
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