construct a triangle ABC in which angle A=120 degree,AB=3 cm .Measure angle B and angle C

Answer :

From given information we form , As :

Step 1 : draw a line AB  =  3 cm

Step 2 : Take any radius ( Less than half of AB )  and center A draw a semicircle that intersect our line AB at  " P ". With same radius and center " P "  we draw an arc that intersect our semicircle at " Q ". Again with same radius and center " Q "  we draw an arc that intersect our semicircle at " R ".

Step 3 : Join AR and extend it to " S " .



But we can't draw whole triangle from given information , So Kindly recheck your question and get back to us , So we can help you precisely  .
 

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