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Trapezoids. Euclidean Geometry High School Math Online. Definition. A trapezoid is a quadrilateral with exactly one pair of parallel opposite sides. Parts of a Trapezoid. The parallel sides are called the bases . The nonparallel sides are called the legs. base. leg. leg. base.
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Trapezoids EuclideanGeometry High School Math Online
Definition • A trapezoid is a quadrilateral with exactly one pair of parallel opposite sides.
Parts of a Trapezoid • The parallel sides are called the bases. • The nonparallel sides are called the legs. base leg leg base
Isosceles Trapezoid • Definition: A trapezoid with congruent legs
Propertiesof Isosceles Trapezoid • Each pair of base angles is congruent • Diagonals are congruent
Median of a Trapezoid • A segment joining the midpoints of the legs • Length of the median is equal to ½ times the sum of the bases
Area of a Trapezoid • Area = ½h (b1 + b2) • H = height of the trapezoid • B1 = one of the bases • B2 = the other base