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Question

Construct a triangle ABC, in which B = 60 , C = 45 and AB + BC+ CA = 22 cm.

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Solution

Steps-

-Draw line segment PQ of length 22 cm. From P draw ray PL which makes angle 60 with PQ using protractor. Similarly draw ray QM which makes angle 45 with PQ.

-Using angle bisector construction method, draw angle bisectors for angles APQ and angle AQP. Let these 2 angle bisectors meet at A.

-Using perpendicular bisector construction method draw perpendicular bisectors DE for AP and FG for AQ respectively.

-Let the point where DE meets PQ be B and let the point where FG meets PQ be C. Join AB and AC. The required triangle is triangle ABC.

q 99


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