How do I find the trapezoid height given area and bases?

Use h = 2A / (a + b). Enter the area A and the two bases a and b; the calculator returns the height instantly.

What is the height of a trapezoid with area 10 and bases 2 and 3?

Assuming 2 and 3 are the bases (a and b), h = 2A/(a+b) = 20/5 = 4 units.

Is a trapezoid a parallelogram?

A parallelogram has two pairs of parallel sides; a trapezoid has at least one pair. Under the inclusive definition, every parallelogram is a trapezoid. Under the strict ‘exactly one pair’ definition, no.

Is a parallelogram a trapezoid?

It depends on the convention. With the inclusive ‘at least one pair of parallel sides’ definition, yes. With the strict ‘exactly one pair’ definition, no.

Does every trapezoid have 2 pairs of opposite parallel sides?

No. By definition a trapezoid has at least one pair of parallel sides (the bases). The legs are generally not parallel unless you’re using the inclusive convention and the shape is a parallelogram.

How many lines of symmetry does a trapezoid have?

A general trapezoid has none. An isosceles trapezoid has one line of symmetry perpendicular to the bases through the midpoint of the median.

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