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Mathematics
Mathematics
Problem
Given that
△
A
B
C
≅
△
P
Q
R
\triangle ABC \cong \triangle PQR
△
A
B
C
≅
△
P
QR
with correspondence
A
B
↔
P
Q
AB \leftrightarrow PQ
A
B
↔
P
Q
,
B
C
↔
Q
R
BC \leftrightarrow QR
B
C
↔
QR
and
C
A
↔
R
P
CA \leftrightarrow RP
C
A
↔
R
P
, answer the following: a. (i) Name the angle of
△
P
Q
R
\triangle PQR
△
P
QR
equal to
∠
B
C
A
\angle BCA
∠
B
C
A
. b. (ii) State the reason for the equality of these two angles.
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