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Question

Construct any ABC. Find a point on side BC which is equidistant from sides AB and AC. Justify your construction.

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Solution

Steps of construction :

(i) Draw any ABC. Bisect A and draw its angle bisector passing through BC.(ii) Let it intersect BC at P.(iii) Draw perpendiculars from P on AB and AC, naming them PX and PY, respectively.(iv) Measure PX and PY. We observe thatPX=PY(v) Thus, P is the point equidistant from AB and AC.Justification : By angle-bisector theorem, P is equidistant from AB and AC.Thus, PX=PY .


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