Trapezoid Calculator

Parallel Side a:
Parallel Side b:
Side c:
Side d:
Altitude (h):
Area:
Perimeter:
Diagonal L1H2:
Diagonal H1L2:
Angle (θ):
Angle (Φ)

In geometry, A trapezoid has two parallel sides are called the bases of the trapezoid. The other two sides are calld the lateral sides.

Trapezoid Formulas

1. Area = h(a+b)/2

2. Perimeter = a + b + c + d

3. Diagonal L1H2 = sqrt(h2+(b-sqrt(c2-h2))2)

4. Diagonal H1L2 = sqrt(h2+(b-sqrt(d2-h2))2)

For example, When Parallel Side a =3, b = 6, Side c = d = 4, altitude(h) = 3, Then the area= 13.5, perimeter = 17, Diagonal L1H2 = 4.5, Diagonal H1L2 = 4.5, Angle (θ) = Angle (Φ) = 0.8481

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