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Question

Which of the following step is not required to construct a △ABC, when AB = 7.6 cm, AC = 6 cm and CB = 4 cm.

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Solution

The correct option is **C** Construct an angle 90∘ at A.

Steps involved to construct a triangle, given all the three sides is as follows:

Steps involved to construct a triangle, given all the three sides is as follows:

- Draw a rough sketch of the triangle.
- Draw one of the sides, say AB = 7.6cm.(We can start with any side, but usually the longest side is taken.)
- Using compass and taking A as centre, draw an arc of radius 6cm.
- With B as centre, draw an arc of radius 4cm that cuts the first arc at point C.
- Join AC and BC.

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