Answer
(a) isosceles trapezoid
(b) isosceles trapezoid
Work Step by Step
(a) By symmetry, an isosceles trapezoid has congruent diagonals.
(b) By symmetry, an isosceles trapezoid has congruent base angles.
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 4 - Section 4.4 - The Trapezoid - Exercises - Page 200: 3
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