Chapter 6.6 Flashcards
(9 cards)
Isosceles trapezoid
A trapezoid with congruent legs
Base angles
A trapezoid has two pairs
Theorem 6.17 – trapezoid base angles theorem
If a trapezoid is isosceles, then each pair of base angles are congruent
Theorem 6.18 – trapezoid diagonals theorem
If a trapezoid is isosceles, then it’s diagonals are congruent
Theorem 6.19
If a trapezoid has one pair of congruent base angles, then it’s an isosceles trapezoid
Theorem 6.20
If a trapezoid has congruent diagonals then it is an isosceles trapezoid
Midsegment
The segment that connects the midpoints of its legs
Theorem 6.21 – midsegment theorem for trapezoids
The midsegment of a trapezoid is parallel to each base, and its length is half the sum of the lengths of the bases
Trapezoid
A quadrilateral with exactly one pair of opposite sides that are parallel