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Problem
Problem
If
8
R
2
=
a
2
+
b
2
+
c
2
8R^2 = a^2 + b^2 + c^2
8
R
2
=
a
2
+
b
2
+
c
2
, then prove that the
Δ
\Delta
Δ
is right angled.
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