Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
In
△
X
Y
Z
\triangle XYZ
△
X
Y
Z
,
∠
Y
=
∠
Z
\angle Y = \angle Z
∠
Y
=
∠
Z
. Which statement must be true? a)
X
Y
=
Y
Z
XY = YZ
X
Y
=
Y
Z
b)
Y
Z
=
X
Z
YZ = XZ
Y
Z
=
X
Z
c)
X
Y
=
X
Z
XY = XZ
X
Y
=
X
Z
d)
X
Y
+
X
Z
=
Y
Z
XY + XZ = YZ
X
Y
+
X
Z
=
Y
Z
Browse the problem library