TOPICS
Unit-11(Examples)

Example-1 :-  Construct a triangle ABC, in which ∠B = 60°, ∠ C = 45° and AB + BC + CA = 11 cm.

Solution :-
  Steps of Construction : 
1. Draw a line segment PQ = 11 cm.( = AB + BC + CA). 
2. At P construct an angle of 60° and at Q, an angle of 45°.
        ray
3. Bisect these angles. Let the bisectors of these angles intersect at a point A. 
4. Draw perpendicular bisectors DE of AP to intersect PQ at B and FG of AQ to intersect PQ at C. 
5. Join AB and AC (see Fig.). 
  Then, ABC is the required triangle.
    
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