Trapezoids (Theorems 5-18/5-19) Flashcards
(5 cards)
What is a trapezoid?
A trapezoid is a quadrilateral with exactly one pair of parallel sides.
Bases - the parallel sides
Legs - other two sides

What is the definition of an isosceles trapezoid?
A trapezoid with congruent legs.

What is the definition of theorem 5-18?
Base angles of an isosceles triangle are congruent.

What is the definition of the median of a trapezoid?
The segment that joins the midpoints of the legs of a trapezoid.

What is theorem 5-19?
The median of a trapezoid;
(1) is parallel to the bases
(2) has a length equal to the average of the base lengths
