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  • Line l is the bisector of an angle ∠ A and B is any point on l. BP and BQ are perpendiculars from B to the arms of ∠ A (see Fig. 7.20). Show that: (i) ∆ APB ≅ ∆ AQB

5.  Line \small l is the bisector of an angle \small \angle A and B is any point on \small l. \small BP and \small BQ  are perpendiculars from \small B to the arms of \small \angle A (see Fig.). Show that: \small \Delta APB\cong \Delta AQB

  

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In the given figure consider \small \Delta APB   and   \small \Delta AQB,

(i) \angle P\ =\ \angle Q               (Right angle)

(ii)\angle BAP\ =\ \angle BAQ       (Since it is given that I is bisector)

(iii) Side AB is common in both triangle.

Thus AAS congruence, we can write :  \small \Delta APB\cong \Delta AQB

Posted by

Devendra Khairwa

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