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Question

Draw ABC, where mABC=90o;BC=4cm and AC=5cm and then construct BXY with 4/3 scale factor. Write points of construction.

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Solution

Data: Construct ABC with mABC=90o, BC=4cm and AC=5cm
To Construct: Construct BXY similar to ABC where the scale factor is 43
Steps of Construction:
(i) Construct ABC with mABC=90o,BC=4cm and AC=5cm.
(ii) In the half plane of ¯¯¯¯¯¯¯¯BC not containing A, draw ¯¯¯¯¯¯¯¯¯BN such that CBN is an acute angle.
(iii) With some appropriate radius and centre B, draw an arc to intersect ¯¯¯¯¯¯¯¯¯BN at B1. With the same radius and centre B1, draw and arc to intersect BN at B2 such that BB1B2.
Similarly, with the same radius and centre Bk, draw an arc to intersect BN at Bk+1 such that Bk1BBk+1, where k=2,3,....
(iv) Draw B3C
(v) Through B4, draw a ray parallel to B3C to intersect BC at X.
(vi) Through X, draw a ray parallel to CA to intersect BA at Y.
Thus BXY is the required triangle.
666658_626386_ans_ba5d17bec0cf4564a5af35b1c95ccdae.png

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