NationMaster - Encyclopedia: Isosceles trapezium

An isosceles trapezoid (isosceles trapezium in British English) is a quadrilateral with a line of symmetry bisecting one pair of opposite sides. This pair of sides is parallel. This makes it automatically a trapezoid. A rectangle is a special case of the isosceles trapezoid, where it doesn't matter which pair of sides you use.

The diagonals of an isosceles trapezoid are congruent and intersect at equal positions.

Categories: Stub | Quadrilaterals

Results from FactBites:

Quadrilateral (439 words)
	Trapezoid (American Englist) or trapezium (British Eng): one pair of opposite sides is parallel.
	Trapezium (Am.) or trapezoid (Brit.): no sides are parallel.
	Isosceles trapezium (Brit.) or isosceles trapezoid (Amer.): two of the opposite sides are parallel, the two other sides are equal, and the two ends of each parallel side have equal angles.

Square (geometry) - encyclopedia article about Square (geometry). (582 words)
	In any parallelogram, the diagonals bisect each other, i.e, they cut each other in half.
	, and isosceles trapezoids/isosceles trapezia An isosceles trapezoid (isosceles trapezium in British English) is a quadrilateral with a line of symmetry bisecting one pair of opposite sides.
	A rectangle is a special case of the isosceles trapezoid, where it doesn't matter which pair of sides you use.

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