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Mathematics
Mathematics
Problem
For the points
A
(
1
,
2
)
A(1,2)
A
(
1
,
2
)
,
B
(
5
,
5
)
B(5,5)
B
(
5
,
5
)
and
C
(
1
,
6
)
C(1,6)
C
(
1
,
6
)
, verify whether
△
A
B
C
\triangle ABC
△
A
B
C
is right-angled. If it is, name the vertex at which the right angle occurs.
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