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Question

ABC~DEF, In ABC, AB = 5.2 cm, BC=4.6 cm,B=45° and BCEF=23
Construct DEF

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Solution

Given: BCEF=23EF=32×4.6 =6.9 cm

Steps of construction:
1. Draw a line segment BC = 4.6 cm.
2. Draw an angle CBX = 45°.
3. With B as the centre, draw an arc of radius 5.2 cm that cuts the ray BX at vertex A. Join AC.
4. Similarly, draw a line segment FE = 6.9 cm.
5. Draw an angle FEY = 45°.
6. Draw another angle BCA=EFP. The rays FP and EY intersect at point D.

Thus, DEF is the required triangle, which is similar to ABC.

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