Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
In quadrilateral
A
B
C
D
ABCD
A
B
C
D
,
A
B
=
C
D
AB = CD
A
B
=
C
D
and
B
C
=
D
A
BC = DA
B
C
=
D
A
. Which of the following statements is always true? a)
A
C
=
B
D
AC = BD
A
C
=
B
D
b)
A
B
=
B
C
AB = BC
A
B
=
B
C
c)
△
A
B
C
≅
△
C
D
A
\triangle ABC \cong \triangle CDA
△
A
B
C
≅
△
C
D
A
d)
∠
A
B
C
=
∠
B
A
D
\angle ABC = \angle BAD
∠
A
B
C
=
∠
B
A
D
Browse the problem library