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Byju's Answer
Standard VII
Mathematics
Sum of the Lengths of 2 Sides of a Triangle
If the sides ...
Question
If the sides of a triangle are 3 cm, 4 cm and 6 cm long, determine whether the triangle is right-angled triangle.
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Solution
In
the
given
triangle
,
the
largest
side
is
6
cm
.
We
know
that
in
a
right
-
angled
triangle
,
the
sum
of
the
squares
of
the
smaller
sides
should
be
equal
to
the
square
of
the
largest
side
.
Therefore
,
3
2
+
4
2
=
9
+
16
=
25
But
,
6
2
=
36
⇒
3
2
+
4
2
≠
6
2
Hence
,
the
given
triangle
is
not
a
right
-
angled
triangle
.
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Sum of the Lengths of 2 Sides of a Triangle
Standard VII Mathematics
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