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Question

Measurements of sides of some triangles are given.
Which of the following triangle(s) can be formed with the given measurements ?

A
ABC in which AB=4 cm,BC=5 cm & AC=0.5 cm
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B
ABC in which AB=10 cm,BC=5 cm & AC=7 cm
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C
ABC in which AB=4 cm,BC=4 cm & AC=5 cm
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D
ABC in which AB=10 cm,BC=4 cm & AC=4 cm
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Solution

The correct option is C ABC in which AB=4 cm,BC=4 cm & AC=5 cm
To construct triangle, the main criteria is that the sum of two sides must be greater than the third side.

In option(a), AB+AC=4+0.5=4.5cm
and BC=5cm so AB+AC<BC

In option(b) and (c),
sum of any two sides is greater than third side.

And, in option(d),
AC+BC=4+4
AC+BC=8cm
and AB=10cm
here, AC+BC<AB
Hence, this triangle is also not possible.
So, option(b), (c) are correct.

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