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Question

Construct a ΔABC in which BC=5.5cm, A=60o and the median AM from the vertex A is 4.5cm.

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Solution

In ΔABC, BC=5.5cm, A=60o, Median AM=4.5cm.
Construction:
(i) Draw a line segment BC=5.5cm.
(ii) Through B draw BX such that CBX=60o.
(iii) Draw BY BX.
(iv) Draw the perpendicular bisector of BC intersecting BY at O and BC at M.
(v) With O as centre and OB as radius, draw the circle.
(vi) The major arc BKC of the circle, contains the vertical angle 60o.
(vii) With M as centre, draw an arc of radius 4.5cm meeting the circle at A and A'.
(viii) Δ ABC or ΔA'BC is the required triangle.

1035331_622528_ans_84910fb88abc48d5a1572c54b66ca1b1.JPG

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