Q6 of 805 Page 11

Draw a triangle ABC with side BC=7cm,∠B=45°, ∠A=105°. Then, construct a triangle whose sides are times the corresponding sides of Δ ABC.

Sum of all interior angle of a triangle = 180


,


=180


105+45+



Step1: First, Draw a line BC=7cm.


Step2: Draw a ray BX.


Step3: Join B3C.


Step4: Draw a parallel line through by to B3C.


Step4: By C’, draw a parallel line to AC..


A’BC’ is required triangle.



Justification:


∠B=45°


∠C=∠C'


∆A'BC'~ ∆ABC






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